Your Local Water Profile: Pasadena
This profile explains what the applicable water provider reported for Pasadena, what those results may mean throughout a home, and where property-specific testing or inspection may still be needed.
First, confirm your water provider.
Water service can vary by address. Confirm the provider shown on your water bill before applying provider-specific results.
What the official water report says
Your water at a glance
Kinneloa Irrigation District
The report lists hardness as 181.48 ppm; this is very hard on the USGS scale.
USGS hardness scale: 0–60 soft; 61–120 moderately hard; 121–180 hard; >180 very hard, in mg/L as CaCO3.
Lincoln Avenue Water Company
The report lists hardness as 230 ppm as CaCO3; this is not classified because the reported unit could not be normalized on the USGS scale.
Reported range: 190 - 280 ppm as CaCO3
USGS hardness scale: 0–60 soft; 61–120 moderately hard; 121–180 hard; >180 very hard, in mg/L as CaCO3.
Las Flores Water Company
The report lists hardness as 283 ppm; this is very hard on the USGS scale.
Reported range: 240 - 325 ppm
USGS hardness scale: 0–60 soft; 61–120 moderately hard; 121–180 hard; >180 very hard, in mg/L as CaCO3.
Rubio Canon Land and Water Association
The report lists hardness as 180 mg/L; this is hard on the USGS scale.
USGS hardness scale: 0–60 soft; 61–120 moderately hard; 121–180 hard; >180 very hard, in mg/L as CaCO3.
Sunny Slope Water Company
The report lists hardness as 84.0 mg/L; this is moderately hard on the USGS scale.
USGS hardness scale: 0–60 soft; 61–120 moderately hard; 121–180 hard; >180 very hard, in mg/L as CaCO3.
California American Water - East Pasadena
The report lists hardness as 89 mg/L; this is moderately hard on the USGS scale.
USGS hardness scale: 0–60 soft; 61–120 moderately hard; 121–180 hard; >180 very hard, in mg/L as CaCO3.
Pasadena Water and Power — compliance, as reported
The report states: “The water system named above hereby certifies that its Consumer Confidence Report was distributed... Further, the system certifies that the information contained in the report is correct and consistent with the compliance monitoring data previously submitted to the State Water Resources Control Board, Division of Drinking Water. [p. 1]”
KINNELOA IRRIGATION DISTRICT — compliance, as reported
The report states: “Kinneloa Irrigation District had no violations of any primary or secondary drinking water standard, maximum residual disinfectant level, action level, treatment technique, or monitoring and reporting requirement during the 2025 reporting period. [p. 5]”
Violations or advisories, as reported: In January 2025, the Eaton Fire caused significant destruction in and around the Kinneloa Irrigation District service area. In coordination with the State Water Resources Control Board (SWRCB), the District issued a Do Not Drink advisory on January 8, 2025. The advisory was promptly lifted on January 21, 2025, following receipt of the results. [p. 5]
LINCOLN AVENUE WATER COMPANY — compliance, as reported
The report states: “The report indicates that the water system complies with all state and federal drinking water standards, with no violations reported for the most recent testing periods.”
Violations or advisories, as reported: Following the devastation caused by the Eaton Fire, Lincoln Avenue Water Company conducted extensive post-fire water quality monitoring focused on VOCs. In accordance with regulatory standards, any sampling location where benzene exceeded the MCL was immediately flushed and resampled following a minimum 72-hour stagnation period. This process was repeated as necessary until benzene levels returned below the MCL or were no longer detectable. Post-fire VOC monitoring remains ongoing, and all recent sampling results continue to be non-detect for benzene.
Las Flores Water Company — compliance, as reported
The report states: “The report states that Las Flores Water Company has never served water exceeding the MCL for nitrate to its customers, and all blended water sample results for perchlorate and PCE were at non-detectable levels, ensuring regulatory compliance.”
Violations or advisories, as reported: None stated. The report indicates no violations for any of the monitored contaminants, including during the Post Eaton Fire 2025 Water Quality Sampling.
Rubio Cañon Land and Water Association — compliance, as reported
The report states: “Once again, we are pleased to report that the water delivered to your home or business meets or exceeds, all State and Federal Drinking Water requirements. [p. 1]”
Sunny Slope Water Company — compliance, as reported
The report states: “We are proud to report that during 2024, the drinking water provided by SSWC met or surpassed all federal and state drinking water standards. [p. 2]”
California American Water - East Pasadena — compliance, as reported
The report states: “We are pleased to report that in 2025, your water met state and federal drinking water requirements. [p. 2]”
Violations or advisories, as reported: Chromium Hexavalent was detected at levels that exceed the MCL. While a water system of our size is not considered in Violation of the Chromium Hexavalent MCL until after October 2027, we are working to address this exceedance & comply with the MCL. Specifically, we are planning to build a treatment system to meet regulatory requirements.
The Three C's — 1 of 3
Chemistry
What does this water tend to do in a home?
Pasadena Water and Power
General mineral and treatment characteristics were not itemized in this provider's reviewed report. The official report link in the Sources section below is the authoritative record.
KINNELOA IRRIGATION DISTRICT
Hardness as CaCO3
The utility reported: 181.48 ppm
UNREGULATED CHEMICALS OF INTEREST · report p. 3 · official report
Sodium
The utility reported: 23.20 ppm
UNREGULATED CHEMICALS OF INTEREST · report p. 3 · official report
Chloride
The utility reported: 19.43 ppm
SECONDARY DRINKING WATER STANDARDS · report p. 3 · official report
Sulfate
The utility reported: 38 ppm
SECONDARY DRINKING WATER STANDARDS · report p. 3 · official report
Total Dissolved Solids
The utility reported: 250 ppm
SECONDARY DRINKING WATER STANDARDS · report p. 3 · official report
Copper
The utility reported: 0.24 ppm
LEAD AND COPPER CONCENTRATIONS AT RESIDENTIAL TAPS · report p. 4 · official report
Lead
The utility reported: Not detected at the report's stated reporting limit ppb
LEAD AND COPPER CONCENTRATIONS AT RESIDENTIAL TAPS · report p. 4 · official report
Chlorine Residual
The utility reported: 1.37 ppm
DISTRIBUTION SYSTEM WATER QUALITY · report p. 4 · official report
LINCOLN AVENUE WATER COMPANY
Hardness
The utility reported: 230 ppm as CaCO3
Reported range: 190 - 280
Reported constituent · report p. [4] · official report
Sodium
The utility reported: 89 ppm
Reported range: 78 - 100
Reported constituent · report p. [4] · official report
Hardness
The utility reported: 220 ppm as CaCO3
Reported range: 200 - 240
Reported constituent · report p. [4] · official report
Sodium
The utility reported: 31 ppm
Reported range: 30 - 31
Reported constituent · report p. [4] · official report
Specific Conductance
The utility reported: 870 µmho/cm
Reported range: 750 - 980
Reported constituent · report p. [4] · official report
Specific Conductance
The utility reported: 560 µmho/cm
Reported range: 530 - 580
Reported constituent · report p. [4] · official report
Total Dissolved Solids
The utility reported: 540 ppm
Reported range: 460 - 620
Reported constituent · report p. [4] · official report
Total Dissolved Solids
The utility reported: 340 ppm
Reported range: 320 - 350
Reported constituent · report p. [4] · official report
Chloride
The utility reported: 92 ppm
Reported range: 86 - 98
Reported constituent · report p. [4] · official report
Chloride
The utility reported: 30 ppm
Reported range: 26 - 33
Reported constituent · report p. [4] · official report
Sulfate
The utility reported: 180 ppm
Reported range: 140 - 210
Reported constituent · report p. [4] · official report
Sulfate
The utility reported: 54 ppm
Reported range: 46 - 62
Reported constituent · report p. [4] · official report
Lead
The utility reported: Not detected at the report's stated reporting limit ppb
Reported range: ND
Reported constituent · report p. [5] · official report
Copper
The utility reported: 0.28 ppm
Reported range: ND - 1.3
Reported constituent · report p. [5] · official report
Las Flores Water Company
Hardness
The utility reported: 283 ppm
Reported range: 240 - 325
Reported constituent · report p. [3] · official report
Hardness
The utility reported: 230 ppm
Reported range: 190 - 280
Reported constituent · report p. [3] · official report
Total Dissolved Solids
The utility reported: 340 ppm
Reported range: 320 - 350
Reported constituent · report p. [3] · official report
Total Dissolved Solids
The utility reported: 540 ppm
Reported range: 460 - 620
Reported constituent · report p. [3] · official report
Chloride
The utility reported: 30 ppm
Reported range: 26 - 33
Reported constituent · report p. [3] · official report
Chloride
The utility reported: 96 ppm
Reported range: 86 - 98
Reported constituent · report p. [3] · official report
Sulfate
The utility reported: 54 ppm
Reported range: 46 - 62
Reported constituent · report p. [3] · official report
Sulfate
The utility reported: 180 ppm
Reported range: 140 - 210
Reported constituent · report p. [3] · official report
Sodium
The utility reported: 28 ppm
Reported range: 26 - 30
Reported constituent · report p. [3] · official report
Sodium
The utility reported: 89 ppm
Reported range: 78 - 100
Reported constituent · report p. [3] · official report
Specific Conductance
The utility reported: 560 mmho/cm
Reported range: 530 - 580
Reported constituent · report p. [3] · official report
Specific Conductance
The utility reported: 870 mmho/cm
Reported range: 750 - 980
Reported constituent · report p. [3] · official report
Chlorine Residual
The utility reported: 1.05 mg/L
Reported range: 1.01 - 1.11
Reported constituent · report p. [2] · official report
Total Trihalomethanes
The utility reported: 18.60 ppb
Reported range: 2.4 - 29.6
Reported constituent · report p. [2] · official report
Haloacetic Acids (HAA5)
The utility reported: 5.35 ppb
Reported range: 1.0 - 11.2
Reported constituent · report p. [2] · official report
Rubio Cañon Land and Water Association
Total Dissolved Solids
The utility reported: 240 mg/L
Surface Water Quality Data · report p. 4 · official report
Total Dissolved Solids
The utility reported: 480 mg/L
Groundwater Quality Data · report p. 5 · official report
Lead 90th percentile
The utility reported: Not detected at the report's stated reporting limit mg/L
Lead and Copper Action Level at Residential Taps · report p. 5 · official report
Copper 90th percentile
The utility reported: 0.63 mg/L
Lead and Copper Action Level at Residential Taps · report p. 5 · official report
Chlorine Residual
The utility reported: 1.1 mg/L
Disinfection By-Products · report p. 4 · official report
Sunny Slope Water Company
Alkalinity as CaCO3
The utility reported: 120 mg/L
GENERAL CHEMICAL ANALYSES · report p. 8 · official report
Total Dissolved Solids
The utility reported: 240 mg/L
GENERAL CHEMICAL ANALYSES · report p. 8 · official report
Chloride (Cl-)
The utility reported: 12 mg/L
GENERAL CHEMICAL ANALYSES · report p. 8 · official report
Sulfate (SO42)
The utility reported: 30 mg/L
GENERAL CHEMICAL ANALYSES · report p. 8 · official report
Lead (Pb)
The utility reported: Not detected at the report's stated reporting limit µg/L
INORGANIC CHEMICALS · report p. 8 · official report
Chlorine Residual
The utility reported: 0.93 mg/L
DISINFECTANT AND DISINFECTION BY-PRODUCTS · report p. 8 · official report
California American Water - East Pasadena
Total Hardness (as CaCO3)
The utility reported: 89 mg/L
OTHER SUBSTANCES OF INTEREST · report p. 6 · official report
Alkalinity as CaCO3
The utility reported: 190 ppm
OTHER SUBSTANCES OF INTEREST · report p. 6 · official report
Total Dissolved Solids
The utility reported: 180 ppm
SECONDARY REGULATED SUBSTANCES · report p. 6 · official report
Copper
The utility reported: 0.198 ppm
LEAD AND COPPER MONITORING PROGRAM · report p. 3 · official report
Chlorine
The utility reported: 1.06 ppm
DISINFECTANTS & DISINFECTION BY PRODUCTS · report p. 4 · official report
The Three C's — 2 of 3
Contaminants
What was reported, and what do the applicable standards mean?
Legal limit — maximum contaminant level (MCL)
The highest level legally allowed in public drinking water under the applicable rule. Do not use MCL as a generic label for goals, action levels, notification levels, or independent guidelines. It is different from a non-enforceable health goal.
California health goal — public health goal (PHG)
A non-enforceable health-protective target developed for standard-setting context. It is not the California legal limit.
Federal health goal — maximum contaminant level goal (MCLG)
A non-enforceable EPA public-health target used in setting standards. It is not the legal limit.
Legal disinfectant-residual limit — maximum residual disinfectant level (MRDL)
The highest level of a drinking-water disinfectant allowed under the applicable rule. It is not an MCL for a contaminant.
Pasadena Water and Power — regulated contaminants reported as detected (0)
No itemized regulated-detection records were extracted from this provider's reviewed report. That is a limit of the extraction, not a claim that nothing was detected — the official report linked below is authoritative.
KINNELOA IRRIGATION DISTRICT — regulated contaminants reported as detected (14)
Gross Alpha Particle Activity
The utility reported: Not detected at the report's stated reporting limit pCi/L
Reported range: 7.51
Legal limit (MCL): 15 · Health goal (MCLG): 0 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
RADIOLOGICALS · report p. 3 · official report
Uranium
The utility reported: Not detected at the report's stated reporting limit pCi/L
Reported range: 15
Legal limit (MCL): 20 · Health goal (MCLG): 0.43 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
RADIOLOGICALS · report p. 3 · official report
1,2,3 Trichloropropane [TCP]
The utility reported: Not detected at the report's stated reporting limit ng/L
Reported range: ND
Legal limit (MCL): 5 · Health goal (MCLG): 0.7 — not an enforceable limit
Violation per report: No
Typical source, per the report: Industrial &Agricultural chemical discharge
SYNTHETIC ORGANIC CHEMICALS · report p. 3 · official report
Perchlorate
The utility reported: 2 µg/L
Reported range: ND - 2.0
Legal limit (MCL): 6 · Health goal (MCLG): 1 — not an enforceable limit
Violation per report: No
Typical source, per the report: Industrial environmental contamination
SYNTHETIC ORGANIC CHEMICALS · report p. 3 · official report
Arsenic
The utility reported: 4.37 ppb
Reported range: ND - 8.00
Legal limit (MCL): 10 · Health goal (MCLG): 0.004 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
INORGANIC CHEMICALS · report p. 3 · official report
Fluoride (Naturally Occurring)
The utility reported: 1.34 ppm
Reported range: 0.83 - 1.90
Legal limit (MCL): 2 · Health goal (MCLG): 1 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
INORGANIC CHEMICALS · report p. 3 · official report
Hexavalent Chromium
The utility reported: 2.3 µg/L
Reported range: 2.2 - 2.4
Legal limit (MCL): 10 · Health goal (MCLG): 0.02 — not an enforceable limit
Violation per report: No
Typical source, per the report: Runoff/leaching from natural deposits
INORGANIC CHEMICALS · report p. 3 · official report
Nitrate
The utility reported: 4.8 ppm
Reported range: 4.8
Legal limit (MCL): 10 · Health goal (MCLG): 10 — not an enforceable limit
Violation per report: No
Typical source, per the report: Leaching from fertilizer use
INORGANIC CHEMICALS · report p. 3 · official report
Copper
The utility reported: 0.24 ppm
AL: 1.3 · Health goal (PHG): 0.3 — not an enforceable limit
Violation per report: No
Typical source, per the report: Corrosion of household plumbing
LEAD AND COPPER CONCENTRATIONS AT RESIDENTIAL TAPS · report p. 4 · official report
Lead
The utility reported: Not detected at the report's stated reporting limit ppb
AL: 15 · Health goal (PHG): 0.2 — not an enforceable limit
Violation per report: No
Typical source, per the report: Corrosion of household plumbing
LEAD AND COPPER CONCENTRATIONS AT RESIDENTIAL TAPS · report p. 4 · official report
Chlorine Residual
The utility reported: 1.37 ppm
Reported range: 0.67 - 2.1
MRDL: 4 · Health goal (MRDLG): 4 — not an enforceable limit
Violation per report: No
Typical source, per the report: Drinking water disinfectant
DISTRIBUTION SYSTEM WATER QUALITY · report p. 4 · official report
Haloacetic Acids (5) (HAA5)
The utility reported: 2.55 ppb
Reported range: 1.20 - 3.90
Legal limit (MCL): 60
Violation per report: No
Typical source, per the report: Byproduct of chlorine disinfection
DISTRIBUTION SYSTEM WATER QUALITY · report p. 4 · official report
Fluoride
The utility reported: 1.13 ppm
Reported range: 0.82 - 2.0
Legal limit (MCL): 2 · Health goal (MCLG): 1 — not an enforceable limit
Violation per report: No
Typical source, per the report: Byproduct of drinking water disinfection
DISTRIBUTION SYSTEM WATER QUALITY · report p. 4 · official report
Total Trihalomethanes (TTHMs)
The utility reported: 18.5 ppb
Reported range: 11.0 - 26.0
Legal limit (MCL): 80
Violation per report: No
Typical source, per the report: Byproduct of chlorine disinfection
DISTRIBUTION SYSTEM WATER QUALITY · report p. 4 · official report
KINNELOA IRRIGATION DISTRICT — unregulated monitoring and secondary (aesthetic) records (7)
Unregulated means monitored without an applicable enforceable legal limit (MCL) — it does not mean unimportant or illegal. Secondary records address aesthetic, cosmetic, or technical effects such as taste, odor, staining, or scale, and are not automatically primary health standards.
Aluminum
The utility reported: Not detected at the report's stated reporting limit ppb
Reported range: ND
Typical source, per the report: Erosion of natural deposits
SECONDARY DRINKING WATER STANDARDS · report p. 3 · official report
Iron
The utility reported: Not detected at the report's stated reporting limit ppb
Reported range: ND
Typical source, per the report: Leaching from natural deposits
SECONDARY DRINKING WATER STANDARDS · report p. 3 · official report
Odor - Threshold
The utility reported: 1 units
Reported range: 1
Typical source, per the report: Naturally-occurring organic materials
SECONDARY DRINKING WATER STANDARDS · report p. 3 · official report
Specific Conductance
The utility reported: 360 µmhos/cm
Reported range: 360
Typical source, per the report: Substances that form ions in water
SECONDARY DRINKING WATER STANDARDS · report p. 3 · official report
Turbidity
The utility reported: 0.22 NTU
Reported range: ND - 0.55
Typical source, per the report: Soil runoff
SECONDARY DRINKING WATER STANDARDS · report p. 3 · official report
Turbidity
The utility reported: 0.1 ntu
Reported range: ND - 0.37
Typical source, per the report: Soil runoff
DISTRIBUTION SYSTEM WATER QUALITY · report p. 4 · official report
Odor
The utility reported: 1 ton
Reported range: 1
Typical source, per the report: Byproduct of drinking water disinfection
DISTRIBUTION SYSTEM WATER QUALITY · report p. 4 · official report
LINCOLN AVENUE WATER COMPANY — regulated contaminants reported as detected (25)
Gross Beta Particle
The utility reported: Not detected at the report's stated reporting limit pCi/L
Reported range: ND - 5
Benchmark: 50 · Health goal (goal): (0) — not an enforceable limit
Violation per report: No
Typical source, per the report: Decay of man-made or natural deposits
Reported constituent · report p. [4] · official report
Uranium
The utility reported: Not detected at the report's stated reporting limit pCi/L
Reported range: ND - 3
Benchmark: 20 · Health goal (goal): 0.43 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
Reported constituent · report p. [4] · official report
Aluminum
The utility reported: 0.096 ppm
Reported range: ND - 0.1
Benchmark: 1 · Health goal (goal): 0.6 — not an enforceable limit
Violation per report: No
Typical source, per the report: Water treatment process residue
Reported constituent · report p. [4] · official report
Barium
The utility reported: 0.13 ppb
Reported range: 0.13
Benchmark: 1 · Health goal (goal): 2 — not an enforceable limit
Violation per report: No
Typical source, per the report: Oil and metal refineries dishcarge; natural deposits erosion
Reported constituent · report p. [4] · official report
Bromate
The utility reported: 3 ppb
Reported range: ND - 12
Benchmark: 10 · Health goal (goal): 0.1 — not an enforceable limit
Violation per report: No
Typical source, per the report: Byproduct of Drinking Water Disinfection
Reported constituent · report p. [4] · official report
Fluoride
The utility reported: 0.7 ppm
Reported range: 0.5 - 0.8
Benchmark: 2 · Health goal (goal): 1 — not an enforceable limit
Violation per report: No
Typical source, per the report: Treatment additive for dental health
Reported constituent · report p. [4] · official report
Gross Alpha Particle
The utility reported: 7.7 pCi/L
Reported range: 7.1 - 8.3
Benchmark: 15 · Health goal (goal): (0) — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
Reported constituent · report p. [4] · official report
Uranium
The utility reported: 7.9 pCi/L
Reported range: 7.3 - 8.5
Benchmark: 20 · Health goal (goal): 0.43 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
Reported constituent · report p. [4] · official report
Fluoride
The utility reported: 0.65 ppm
Reported range: 0.55 - 0.74
Benchmark: 2 · Health goal (goal): 1 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
Reported constituent · report p. [4] · official report
Hexavalent Chromium
The utility reported: 1.3 ppb
Reported range: 1 - 1.5
Benchmark: 10 · Health goal (goal): 0.02 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
Reported constituent · report p. [4] · official report
Nitrate
The utility reported: 2.5 ppm as N
Reported range: 0.55 - 3.9
Benchmark: 10 · Health goal (goal): 10 — not an enforceable limit
Violation per report: No
Typical source, per the report: Runoff and leaching from fertilizer use
Reported constituent · report p. [4] · official report
Total Trihalomethanes
The utility reported: 31 ppb
Reported range: ND - 30
Benchmark: 80
Violation per report: No
Typical source, per the report: Byproducts of chlorine disinfection
Reported constituent · report p. [5] · official report
Haloacetic Acids
The utility reported: 14 ppb
Reported range: ND - 12
Benchmark: 60
Violation per report: No
Typical source, per the report: Byproducts of chlorine disinfection
Reported constituent · report p. [5] · official report
Total Chlorine Residual
The utility reported: 1.5 ppm
Reported range: 0.24 - 2.2
Benchmark: (4) · Health goal (goal): (4) — not an enforceable limit
Violation per report: No
Typical source, per the report: Drinking water disinfectant
Reported constituent · report p. [5] · official report
Lead
The utility reported: Not detected at the report's stated reporting limit ppb
Reported range: ND
Benchmark: 15 · Health goal (goal): 0.2 — not an enforceable limit
Violation per report: No
Typical source, per the report: Corrosion of household plumbing
Reported constituent · report p. [5] · official report
Copper
The utility reported: 0.28 ppm
Reported range: ND - 1.3
Benchmark: 1.3 · Health goal (goal): 0.3 — not an enforceable limit
Violation per report: No
Typical source, per the report: Corrosion of household plumbing
Reported constituent · report p. [5] · official report
1,1-Dichloroethane
The utility reported: ND - 0.53 ppb
Reported range: ND - 0.53
Benchmark: 5 · Health goal (goal): 3 — not an enforceable limit
Violation per report: No
Reported constituent · report p. [5] · official report
1,2-Dichloroethane
The utility reported: ND - 0.5 ppt
Reported range: ND - 0.5
Benchmark: 500 · Health goal (goal): 0.4 — not an enforceable limit
Violation per report: No
Reported constituent · report p. [5] · official report
1,2-Dichloropropane
The utility reported: ND - 0.94 ppb
Reported range: ND - 0.94
Benchmark: 5 · Health goal (goal): 0.5 — not an enforceable limit
Violation per report: No
Reported constituent · report p. [6] · official report
Benzene
The utility reported: ND - 31 ppb
Reported range: ND - 31
Benchmark: 1 · Health goal (goal): 0.15 — not an enforceable limit
Violation per report: No
Reported constituent · report p. [6] · official report
Dichloromethane
The utility reported: ND - 1.1 ppb
Reported range: ND - 1.1
Benchmark: 5 · Health goal (goal): 4 — not an enforceable limit
Violation per report: No
Reported constituent · report p. [6] · official report
Ethylbenzene
The utility reported: ND - 3.9 ppb
Reported range: ND - 3.9
Benchmark: 300 · Health goal (goal): 300 — not an enforceable limit
Violation per report: No
Reported constituent · report p. [6] · official report
Toluene
The utility reported: ND - 7.9 ppb
Reported range: ND - 7.9
Benchmark: 150 · Health goal (goal): 150 — not an enforceable limit
Violation per report: No
Reported constituent · report p. [6] · official report
Total Trihalomethanes
The utility reported: ND - 43 ppb
Reported range: ND - 43
Benchmark: 80
Violation per report: No
Reported constituent · report p. [6] · official report
Xylenes
The utility reported: ND - 0.0018 ppm
Reported range: ND - 0.0018
Benchmark: 1.75 · Health goal (goal): 1.8 — not an enforceable limit
Violation per report: No
Reported constituent · report p. [6] · official report
LINCOLN AVENUE WATER COMPANY — unregulated monitoring and secondary (aesthetic) records (20)
Unregulated means monitored without an applicable enforceable legal limit (MCL) — it does not mean unimportant or illegal. Secondary records address aesthetic, cosmetic, or technical effects such as taste, odor, staining, or scale, and are not automatically primary health standards.
Aluminum
The utility reported: 96 ppb
Reported range: ND - 100
Reported constituent · report p. [4] · official report
Chloride
The utility reported: 92 ppm
Reported range: 86 - 98
Reported constituent · report p. [4] · official report
Color
The utility reported: 1 Color Units
Reported range: 1
Reported constituent · report p. [4] · official report
Specific Conductance
The utility reported: 870 µmho/cm
Reported range: 750 - 980
Reported constituent · report p. [4] · official report
Sulfate
The utility reported: 180 ppm
Reported range: 140 - 210
Reported constituent · report p. [4] · official report
Total Dissolved Solids
The utility reported: 540 ppm
Reported range: 460 - 620
Reported constituent · report p. [4] · official report
Hardness
The utility reported: 230 ppm as CaCO3
Reported range: 190 - 280
Reported constituent · report p. [4] · official report
Sodium
The utility reported: 89 ppm
Reported range: 78 - 100
Reported constituent · report p. [4] · official report
Chloride
The utility reported: 30 ppm
Reported range: 26 - 33
Reported constituent · report p. [4] · official report
Iron
The utility reported: 29 ppb
Reported range: ND - 58
Reported constituent · report p. [4] · official report
Manganese
The utility reported: Not detected at the report's stated reporting limit ppb
Reported range: ND - 6.3
Reported constituent · report p. [4] · official report
Specific Conductance
The utility reported: 560 µmho/cm
Reported range: 530 - 580
Reported constituent · report p. [4] · official report
Sulfate
The utility reported: 54 ppm
Reported range: 46 - 62
Reported constituent · report p. [4] · official report
Total Dissolved Solids
The utility reported: 340 ppm
Reported range: 320 - 350
Reported constituent · report p. [4] · official report
Turbidity
The utility reported: 0.5 NTU
Reported range: 0.35 - 0.65
Reported constituent · report p. [4] · official report
Hardness
The utility reported: 220 ppm as CaCO3
Reported range: 200 - 240
Reported constituent · report p. [4] · official report
Sodium
The utility reported: 31 ppm
Reported range: 30 - 31
Reported constituent · report p. [4] · official report
Color
The utility reported: Not detected at the report's stated reporting limit Color Units
Reported range: ND - 10
Reported constituent · report p. [5] · official report
Odor
The utility reported: 1 threshold odor number
Reported range: 1
Reported constituent · report p. [5] · official report
Turbidity
The utility reported: 2.1 NTU
Reported range: ND - 6.2
Reported constituent · report p. [5] · official report
Las Flores Water Company — regulated contaminants reported as detected (15)
Turbidity
The utility reported: 0.5 NTU
Reported range: 0.35 - 0.65
Benchmark: 5 · Health goal (goal): NA — not an enforceable limit
Violation per report: No
Typical source, per the report: Soil runoff
Reported constituent · report p. [2] · official report
Turbidity
The utility reported: 0.2 NTU
Reported range: <0.1 - 1
Benchmark: 5 · Health goal (goal): NA — not an enforceable limit
Violation per report: No
Typical source, per the report: Naturally present in groundwater
Reported constituent · report p. [2] · official report
Alpha Radiation
The utility reported: 7.7 pCi/L
Reported range: 7.1 - 8.3
Benchmark: 15 · Health goal (goal): NA — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of Natural Deposits
Reported constituent · report p. [3] · official report
Uranium
The utility reported: 7.9 pCi/L
Reported range: 7.3 - 8.5
Benchmark: 20 · Health goal (goal): 0.43 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of Natural Deposits
Reported constituent · report p. [3] · official report
Nitrate
The utility reported: 2.5 ppm N
Reported range: 0.55 - 3.9
Benchmark: 10 · Health goal (goal): 10 — not an enforceable limit
Violation per report: No
Typical source, per the report: Runoff, leaking from fertilizer
Reported constituent · report p. [3] · official report
Hexavalent Chromium
The utility reported: 1.3 ppb
Reported range: 1 - 1.5
Benchmark: 10 · Health goal (goal): 0 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of Natural Deposits
Reported constituent · report p. [3] · official report
Fluoride
The utility reported: 0.65 ppm
Reported range: 0.55 - 0.74
Benchmark: 2 · Health goal (goal): 1 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of Natural Deposits
Reported constituent · report p. [3] · official report
Fluoride
The utility reported: 0.7 ppm
Reported range: 0.5 - 0.8
Benchmark: 2 · Health goal (goal): 1 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
Reported constituent · report p. [3] · official report
Beta Radiation
The utility reported: Not detected at the report's stated reporting limit pCi/L
Reported range: ND - 5
Benchmark: 50 · Health goal (goal): 0 — not an enforceable limit
Violation per report: No
Typical source, per the report: Decay of man-made or natural deposits
Reported constituent · report p. [3] · official report
Uranium
The utility reported: Not detected at the report's stated reporting limit pCi/L
Reported range: ND - 3
Benchmark: 20 · Health goal (goal): 0.43 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
Reported constituent · report p. [3] · official report
Aluminum
The utility reported: 0 ppm
Reported range: ND - 0.1
Benchmark: 1 · Health goal (goal): 1 — not an enforceable limit
Violation per report: No
Typical source, per the report: Residue from water treatment process
Reported constituent · report p. [3] · official report
Benzene
The utility reported: 0.9 ug/L
Reported range: ND - 440ug/L
Benchmark: 1ug/L · Health goal (goal): 1ug/L — not an enforceable limit
Violation per report: No
Typical source, per the report: Discharged from destroyed structures with plastics
Reported constituent · report p. [2] · official report
Benzene
The utility reported: 1.3ug/L ug/L
Reported range: ND - 23ug/L
Benchmark: 1ug/L · Health goal (goal): 1ug/L — not an enforceable limit
Violation per report: No
Typical source, per the report: Discharged from destroyed structures with plastics
Reported constituent · report p. [2] · official report
THM
The utility reported: 11ug/L ppb
Reported range: ND - 23ug/L
Benchmark: 80ug/L · Health goal (goal): NA — not an enforceable limit
Violation per report: No
Typical source, per the report: Chlorine Byproduct
Reported constituent · report p. [2] · official report
THM
The utility reported: 15ug/L ppb
Reported range: ND - 30ug/L
Benchmark: 80ug/L · Health goal (goal): NA — not an enforceable limit
Violation per report: No
Typical source, per the report: Chlorine Byproduct
Reported constituent · report p. [2] · official report
Las Flores Water Company — unregulated monitoring and secondary (aesthetic) records (4)
Unregulated means monitored without an applicable enforceable legal limit (MCL) — it does not mean unimportant or illegal. Secondary records address aesthetic, cosmetic, or technical effects such as taste, odor, staining, or scale, and are not automatically primary health standards.
Color
The utility reported: <0.3 color units
Reported range: <0.3
Reported constituent · report p. [2] · official report
Odor
The utility reported: 1 threshold odor number
Reported range: 1
Reported constituent · report p. [2] · official report
Manganese
The utility reported: Not detected at the report's stated reporting limit ppb
Reported range: ND - 6.3
Reported constituent · report p. [3] · official report
Iron
The utility reported: 29 ppb
Reported range: ND - 58
Reported constituent · report p. [3] · official report
Rubio Cañon Land and Water Association — regulated contaminants reported as detected (16)
Alpha Radiation
The utility reported: 13.7 pCi/L
Reported range: 7.6 - 14
Legal limit (MCL): 15.0 · Health goal (PHG): 0 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
Surface Water Quality Data · report p. 4 · official report
Uranium
The utility reported: 15.4 pCi/L
Reported range: 15 - 19
Legal limit (MCL): 20.0 · Health goal (PHG): 1.0 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
Surface Water Quality Data · report p. 4 · official report
Radium 226 & 228
The utility reported: 0.62 pCi/L
Reported range: 0.57 - 0.67
Legal limit (MCL): 5.0 · Health goal (PHG): 0 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
Surface Water Quality Data · report p. 4 · official report
Fluoride
The utility reported: 2.2 mg/L
Reported range: 1.9 - 2.4
Legal limit (MCL): 2.0 · Health goal (PHG): 1.0 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
Surface Water Quality Data · report p. 4 · official report
Nitrate as N (mg/L as NO3-N)
The utility reported: 0.95 mg/L
Reported range: 0.71 - 1.1
Legal limit (MCL): 10 · Health goal (PHG): 10 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
Surface Water Quality Data · report p. 4 · official report
Total Trihalomethanes
The utility reported: 1.1 ug/L
Reported range: 0 - 1.1
Legal limit (MCL): 80
Violation per report: No
Typical source, per the report: Byproducts of drinking water chlorination
Disinfection By-Products · report p. 4 · official report
Haloacetic Acids (five) system
The utility reported: 2.3 ug/L
Reported range: ND - 4.6
Legal limit (MCL): 60
Violation per report: No
Typical source, per the report: Byproducts of drinking water chlorination
Disinfection By-Products · report p. 4 · official report
Chlorine Residual
The utility reported: 1.1 mg/L
Reported range: 0.84 - 2
Legal limit (MCL): 4
Violation per report: No
Typical source, per the report: Drinking water disinfectant added for treatment
Disinfection By-Products · report p. 4 · official report
Tetrachloroethylene (PCE)
The utility reported: 4.42 ug/L
Reported range: 1.1 - 14
Legal limit (MCL): 5 · Health goal (PHG): 0.06 — not an enforceable limit
Violation per report: No
Typical source, per the report: Discharge from factories, dry cleaners, and auto shops
Groundwater Quality Data · report p. 5 · official report
Nitrate as N (mg/L as NO3-N)
The utility reported: 6.1 mg/L
Reported range: 5.7 - 6.4
Legal limit (MCL): 10 · Health goal (PHG): 10 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
Groundwater Quality Data · report p. 5 · official report
Fluoride
The utility reported: 0.96 mg/L
Reported range: ND - 1.5
Legal limit (MCL): 2 · Health goal (PHG): 1 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
Groundwater Quality Data · report p. 5 · official report
Total Trihalomethanes
The utility reported: 11.5 ug/L
Reported range: 2.6 - 25.9
Legal limit (MCL): 80
Violation per report: No
Typical source, per the report: Byproducts of chlorine disinfection
Groundwater Quality Data · report p. 5 · official report
Haloacetic Acids (five)
The utility reported: 2.3 ug/L
Reported range: ND - 4.6
Legal limit (MCL): 60
Violation per report: No
Typical source, per the report: Byproducts of chlorine disinfection
Groundwater Quality Data · report p. 5 · official report
Alpha Radiation
The utility reported: 12.7 pCi/L
Reported range: 8.8 - 18
Legal limit (MCL): 15 · Health goal (PHG): 0 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
Groundwater Quality Data · report p. 5 · official report
Uranium
The utility reported: 16.9 pCi/L
Reported range: 15 - 19
Legal limit (MCL): 20 · Health goal (PHG): 5 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
Groundwater Quality Data · report p. 5 · official report
Radium 226 & 228
The utility reported: 0.62 pCi/L
Reported range: 0.57 - 0.67
Legal limit (MCL): 5 · Health goal (PHG): 0 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
Groundwater Quality Data · report p. 5 · official report
Rubio Cañon Land and Water Association — unregulated monitoring and secondary (aesthetic) records (19)
Unregulated means monitored without an applicable enforceable legal limit (MCL) — it does not mean unimportant or illegal. Secondary records address aesthetic, cosmetic, or technical effects such as taste, odor, staining, or scale, and are not automatically primary health standards.
Chloride
The utility reported: 6.8 mg/L
Reported range: 6.8 - 45.5
Typical source, per the report: Runoff or leaching from natural deposits
Surface Water Quality Data · report p. 4 · official report
Specific Conductance
The utility reported: 400 us/cm
Reported range: 400 - 790
Typical source, per the report: Substances that form ions in water
Surface Water Quality Data · report p. 4 · official report
Sulfate
The utility reported: 33 mg/L
Reported range: 33 - 73
Typical source, per the report: Runoff or leaching of natural deposits
Surface Water Quality Data · report p. 4 · official report
Total Dissolved Solids
The utility reported: 240 mg/L
Reported range: 240 - 480
Typical source, per the report: Runoff or leaching of natural deposits
Surface Water Quality Data · report p. 4 · official report
Sodium
The utility reported: 16 mg/L
Reported range: 0 - 16
Typical source, per the report: Runoff or leaching from natural deposits
Surface Water Quality Data · report p. 4 · official report
Hardness
The utility reported: 180 mg/L
Reported range: 180 - 380
Typical source, per the report: Runoff or leaching from natural deposits
Surface Water Quality Data · report p. 4 · official report
Alkalinity
The utility reported: 160 mg/L
Reported range: 120 - 165
Typical source, per the report: Runoff or leaching from natural deposits
Surface Water Quality Data · report p. 4 · official report
Chloride
The utility reported: 45.5 mg/L
Reported range: 39 - 52
Typical source, per the report: Erosion of natural deposits
Groundwater Quality Data · report p. 5 · official report
Specific Conductance
The utility reported: 790 us/cm
Reported range: 670 - 910
Typical source, per the report: Erosion of natural deposits
Groundwater Quality Data · report p. 5 · official report
Sulfate
The utility reported: 73 mg/L
Reported range: 62 - 83
Typical source, per the report: Erosion of natural deposits
Groundwater Quality Data · report p. 5 · official report
Total Dissolved Solids
The utility reported: 480 mg/L
Reported range: 400 - 560
Typical source, per the report: Erosion of natural deposits
Groundwater Quality Data · report p. 5 · official report
Perchlorate
The utility reported: 1.96 ug/L
Reported range: 1.3 - 3
Typical source, per the report: Industrial waste discharge
Groundwater Quality Data · report p. 5 · official report
Sodium
The utility reported: 28 mg/L
Reported range: 25 - 31
Typical source, per the report: Erosion of natural deposits
Groundwater Quality Data · report p. 5 · official report
Hardness
The utility reported: 380 mg/L
Reported range: 300 - 460
Typical source, per the report: Erosion of natural deposits
Groundwater Quality Data · report p. 5 · official report
Boron
The utility reported: 50 ug/L
Reported range: ND - 100
Typical source, per the report: Runoff/leaching from natural deposits
Groundwater Quality Data · report p. 5 · official report
Vanadium
The utility reported: 3.75 ug/L
Reported range: 3.2 - 4.3
Typical source, per the report: Naturally occurring / Industrial waste discharge
Groundwater Quality Data · report p. 5 · official report
Chromium VI
The utility reported: 0.97 ug/L
Reported range: 0.43 - 1.5
Typical source, per the report: Industrial waste discharge
Groundwater Quality Data · report p. 5 · official report
Color
The utility reported: Not detected at the report's stated reporting limit color units
Reported range: 0 - 3
Typical source, per the report: Naturally present in groundwater
Groundwater Quality Data · report p. 5 · official report
Odor
The utility reported: 1.0 Threshold odor number
Reported range: ND - 1
Typical source, per the report: Naturally present in groundwater
Groundwater Quality Data · report p. 5 · official report
Sunny Slope Water Company — regulated contaminants reported as detected (11)
Chlorine Residual
The utility reported: 0.93 mg/L
Reported range: 0.08 - 1.94
MRDL: 4 · Health goal (MRDLG): 4 — not an enforceable limit
Violation per report: No
Typical source, per the report: Drinking water disinfectant
DISINFECTANT AND DISINFECTION BY-PRODUCTS · report p. 8 · official report
Total Trihalomethanes (TTHM)
The utility reported: 2.34 µg/L
Reported range: ND - 6.20
Legal limit (MCL): 80
Violation per report: No
Typical source, per the report: By-product of drinking water chlorination
DISINFECTANT AND DISINFECTION BY-PRODUCTS · report p. 8 · official report
Haloacetic Acids (five) (HAA5)
The utility reported: 0.89 µg/L
Reported range: ND - 7.10
Legal limit (MCL): 60
Violation per report: No
Typical source, per the report: By-product of drinking water chlorination
DISINFECTANT AND DISINFECTION BY-PRODUCTS · report p. 8 · official report
Copper (Cu)
The utility reported: 0.45 mg/L
Reported range: ND - 0.79
AL: 1.3 · Health goal (PHG): 0.3 — not an enforceable limit
Violation per report: No
Typical source, per the report: Corrosion of household plumbing system
INORGANIC CHEMICALS · report p. 8 · official report
Fluoride (F)
The utility reported: 1 mg/L
Reported range: 1
Legal limit (MCL): 2 · Health goal (PHG): 1 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
INORGANIC CHEMICALS · report p. 8 · official report
Nitrate (NO3) as Nitrogen (N)
The utility reported: 2.87 mg/L
Reported range: 2.0 - 3.8
Legal limit (MCL): 10 · Health goal (PHG): 10 — not an enforceable limit
Violation per report: No
Typical source, per the report: Leaching from fertilizer use
INORGANIC CHEMICALS · report p. 8 · official report
Chromium, Hexavalent (Cr+6)
The utility reported: 7.53 µg/L
Reported range: 5.70 - 9.60
Legal limit (MCL): 10 · Health goal (PHG): 0.2 — not an enforceable limit
Violation per report: No
Typical source, per the report: Naturally present in the environment ; industrial wastes
INORGANIC CHEMICALS · report p. 8 · official report
Perchlorate (ClO-4)
The utility reported: 1.4 µg/L
Reported range: 1.1 - 1.5
Legal limit (MCL): 6 · Health goal (PHG): 1 — not an enforceable limit
Violation per report: No
Typical source, per the report: Naturally-occurring/man-made from aerospace/industrial
INORGANIC CHEMICALS · report p. 8 · official report
Gross Alpha Activity
The utility reported: 5.81 pCi/L
Reported range: 3.65 - 8.17
Legal limit (MCL): 15 · Health goal (MCLG): 0 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
RADIOACTIVITY · report p. 8 · official report
Combined Radium
The utility reported: 0.25 pCi/L
Reported range: 0.159 - 0.389
Legal limit (MCL): 5 · Health goal (MCLG): 0 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
RADIOACTIVITY · report p. 8 · official report
Uranium (U)
The utility reported: 0.61 pCi/L
Reported range: 0.61
Legal limit (MCL): 20 · Health goal (PHG): 0.43 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits
RADIOACTIVITY · report p. 8 · official report
Sunny Slope Water Company — unregulated monitoring and secondary (aesthetic) records (5)
Unregulated means monitored without an applicable enforceable legal limit (MCL) — it does not mean unimportant or illegal. Secondary records address aesthetic, cosmetic, or technical effects such as taste, odor, staining, or scale, and are not automatically primary health standards.
Bicarbonate (HCO3)
The utility reported: 150 mg/L
Reported range: 150
Typical source, per the report: Runoff/leaching from natural deposits
GENERAL CHEMICAL ANALYSES · report p. 8 · official report
Specific Conductance
The utility reported: 370 µmho/cm
Reported range: 370
Typical source, per the report: Substances that form ions in water
GENERAL CHEMICAL ANALYSES · report p. 8 · official report
Boron (B)
The utility reported: 160 µg/L
Reported range: 160
Typical source, per the report: Runoff/leaching from natural deposits
METALS · report p. 8 · official report
Odor-Threshold
The utility reported: 1 Units
Reported range: 1.00
Typical source, per the report: Naturally-occurring organic materials
OTHER · report p. 8 · official report
Turbidity
The utility reported: 0.2 NTU
Reported range: 0.10 - 0.43
Typical source, per the report: Erosion of natural deposits/runoff
OTHER · report p. 8 · official report
California American Water - East Pasadena — regulated contaminants reported as detected (13)
Lead
The utility reported: 1 ppb
Reported range: ND to 5
AL: 15 · Health goal (MCLG): 0 — not an enforceable limit
Violation per report: No
Typical source, per the report: Corrosion of household plumbing systems.
LEAD AND COPPER MONITORING PROGRAM · report p. 3 · official report
Copper
The utility reported: 0.198 ppm
Reported range: ND to 0.48
AL: 1.3 · Health goal (MCLG): 0.3 — not an enforceable limit
Violation per report: No
Typical source, per the report: Corrosion of household plumbing systems.
LEAD AND COPPER MONITORING PROGRAM · report p. 3 · official report
Haloacetic Acids
The utility reported: 5.9 ppb
Reported range: NA
Legal limit (MCL): 60 · Health goal (MCLG): NA — not an enforceable limit
Violation per report: No
Typical source, per the report: By-product of drinking water disinfection.
DISINFECTANTS & DISINFECTION BY PRODUCTS · report p. 4 · official report
Total Trihalomethanes
The utility reported: Not detected at the report's stated reporting limit ppb
Reported range: NA
Legal limit (MCL): 80 · Health goal (MCLG): NA — not an enforceable limit
Violation per report: No
Typical source, per the report: By-product of drinking water disinfection.
DISINFECTANTS & DISINFECTION BY PRODUCTS · report p. 4 · official report
Chlorine
The utility reported: 1.06 ppm
Reported range: 0.84 to 1.24
MRDL: 4 · Health goal (MRDLG): 4 — not an enforceable limit
Violation per report: No
Typical source, per the report: Water additive used to control microbes.
DISINFECTANTS & DISINFECTION BY PRODUCTS · report p. 4 · official report
Arsenic
The utility reported: 0.78 ppb
Reported range: 0.7 to 0.85
Legal limit (MCL): 10 · Health goal (PHG (MCLG)): 0.004 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits; runoff from orchards; glass and electronic production wastes.
East Pasadena Wells · report p. 5 · official report
Barium
The utility reported: .016 ppm
Reported range: 0.15 to 0.16
Legal limit (MCL): 1 · Health goal (PHG (MCLG)): 2 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits; discharges of oi; drilling wastes and metal refineries.
East Pasadena Wells · report p. 5 · official report
Chromium
The utility reported: 9 ppb
Reported range: 8 to 10
Legal limit (MCL): 50 · Health goal (PHG (MCLG)): 100 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits; discharge from steel & pulp mills as well as chrome plaiting .
East Pasadena Wells · report p. 5 · official report
Fluoride
The utility reported: 0.76 ppm
Reported range: 0.75 to 0.76
Legal limit (MCL): 2 · Health goal (PHG (MCLG)): 1 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminum factories.
East Pasadena Wells · report p. 5 · official report
Nitrate as N
The utility reported: 0.77 ppm
Reported range: 0.33 to 1.2
Legal limit (MCL): 10 · Health goal (PHG (MCLG)): 10 — not an enforceable limit
Violation per report: No
Typical source, per the report: Fertilizer runoff; leaching from septic tanks, sewage; erosion of natural deposits.
East Pasadena Wells · report p. 5 · official report
Gross Alpha Particle Activity
The utility reported: 3.01 pCi/L
Reported range: 0.6 to 5.4
Legal limit (MCL): 15 · Health goal (PHG (MCLG)): 0 — not an enforceable limit
Violation per report: No
Typical source, per the report: Decay of natural and man-made deposits.
East Pasadena Wells · report p. 5 · official report
Uranium
The utility reported: 1.25 pCi/L
Reported range: 1.2 to 1.3
Legal limit (MCL): 20 · Health goal (PHG (MCLG)): 0.43 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits.
East Pasadena Wells · report p. 5 · official report
Chromium Hexavalent
The utility reported: 10.5 ppb
Reported range: 8.7 to 13
Legal limit (MCL): 10 · Health goal (PHG (MCLG)): 0.02 — not an enforceable limit
Violation per report: No
Typical source, per the report: The major source of hexavalent chromium is discharge from electroplating factories, leather tanneries, wood preservation, chemical synthesis, refractory production, and textile manufacturing facilities; erosion of natural deposits.
East Pasadena Wells · report p. 5 · official report
California American Water - East Pasadena — unregulated monitoring and secondary (aesthetic) records (2)
Unregulated means monitored without an applicable enforceable legal limit (MCL) — it does not mean unimportant or illegal. Secondary records address aesthetic, cosmetic, or technical effects such as taste, odor, staining, or scale, and are not automatically primary health standards.
Specific Conductance
The utility reported: 340 mmhos/cm
Reported range: 330 to 350
Typical source, per the report: Substances that form ions when in water
SECONDARY REGULATED SUBSTANCES · report p. 6 · official report
Turbidity
The utility reported: 0.05 NTU
Reported range: ND to 0.10
Typical source, per the report: Soil runoff
SECONDARY REGULATED SUBSTANCES · report p. 6 · official report
The Three C's — 3 of 3
Corrosion
What conditions could influence pipes, fixtures, and a water heater?
Pasadena Water and Power
Corrosion-related inputs (such as pH or alkalinity) were not itemized in this provider's reviewed report.
KINNELOA IRRIGATION DISTRICT
Chloride
The utility reported: 19.43 ppm
SECONDARY DRINKING WATER STANDARDS · report p. 3 · official report
Sulfate
The utility reported: 38 ppm
SECONDARY DRINKING WATER STANDARDS · report p. 3 · official report
Copper
The utility reported: 0.24 ppm
LEAD AND COPPER CONCENTRATIONS AT RESIDENTIAL TAPS · report p. 4 · official report
Lead
The utility reported: Not detected at the report's stated reporting limit ppb
LEAD AND COPPER CONCENTRATIONS AT RESIDENTIAL TAPS · report p. 4 · official report
Gross Alpha Particle Activity
The utility reported: Not detected at the report's stated reporting limit pCi/L
Reported range: 7.51
Typical source, per the report: Erosion of natural deposits
RADIOLOGICALS · report p. 3 · official report
LINCOLN AVENUE WATER COMPANY
Chloride
The utility reported: 92 ppm
Reported range: 86 - 98
Reported constituent · report p. [4] · official report
Chloride
The utility reported: 30 ppm
Reported range: 26 - 33
Reported constituent · report p. [4] · official report
Sulfate
The utility reported: 180 ppm
Reported range: 140 - 210
Reported constituent · report p. [4] · official report
Sulfate
The utility reported: 54 ppm
Reported range: 46 - 62
Reported constituent · report p. [4] · official report
Lead
The utility reported: Not detected at the report's stated reporting limit ppb
Reported range: ND
Reported constituent · report p. [5] · official report
Copper
The utility reported: 0.28 ppm
Reported range: ND - 1.3
Reported constituent · report p. [5] · official report
Gross Alpha Particle
The utility reported: 7.7 pCi/L
Reported range: 7.1 - 8.3
Typical source, per the report: Erosion of natural deposits
Reported constituent · report p. [4] · official report
Las Flores Water Company
Chloride
The utility reported: 30 ppm
Reported range: 26 - 33
Reported constituent · report p. [3] · official report
Chloride
The utility reported: 96 ppm
Reported range: 86 - 98
Reported constituent · report p. [3] · official report
Sulfate
The utility reported: 54 ppm
Reported range: 46 - 62
Reported constituent · report p. [3] · official report
Sulfate
The utility reported: 180 ppm
Reported range: 140 - 210
Reported constituent · report p. [3] · official report
Alpha Radiation
The utility reported: 7.7 pCi/L
Reported range: 7.1 - 8.3
Typical source, per the report: Erosion of Natural Deposits
Reported constituent · report p. [3] · official report
Rubio Cañon Land and Water Association
Lead 90th percentile
The utility reported: Not detected at the report's stated reporting limit mg/L
Lead and Copper Action Level at Residential Taps · report p. 5 · official report
Copper 90th percentile
The utility reported: 0.63 mg/L
Lead and Copper Action Level at Residential Taps · report p. 5 · official report
Alpha Radiation
The utility reported: 13.7 pCi/L
Reported range: 7.6 - 14
Typical source, per the report: Erosion of natural deposits
Surface Water Quality Data · report p. 4 · official report
Alpha Radiation
The utility reported: 12.7 pCi/L
Reported range: 8.8 - 18
Typical source, per the report: Erosion of natural deposits
Groundwater Quality Data · report p. 5 · official report
Sunny Slope Water Company
Alkalinity as CaCO3
The utility reported: 120 mg/L
GENERAL CHEMICAL ANALYSES · report p. 8 · official report
Chloride (Cl-)
The utility reported: 12 mg/L
GENERAL CHEMICAL ANALYSES · report p. 8 · official report
Sulfate (SO42)
The utility reported: 30 mg/L
GENERAL CHEMICAL ANALYSES · report p. 8 · official report
Lead (Pb)
The utility reported: Not detected at the report's stated reporting limit µg/L
INORGANIC CHEMICALS · report p. 8 · official report
Gross Alpha Activity
The utility reported: 5.81 pCi/L
Reported range: 3.65 - 8.17
Typical source, per the report: Erosion of natural deposits
RADIOACTIVITY · report p. 8 · official report
California American Water - East Pasadena
Alkalinity as CaCO3
The utility reported: 190 ppm
OTHER SUBSTANCES OF INTEREST · report p. 6 · official report
Copper
The utility reported: 0.198 ppm
LEAD AND COPPER MONITORING PROGRAM · report p. 3 · official report
Gross Alpha Particle Activity
The utility reported: 3.01 pCi/L
Reported range: 0.6 to 5.4
Typical source, per the report: Decay of natural and man-made deposits.
East Pasadena Wells · report p. 5 · official report
Whole-Home Relevance
What this may mean throughout your home
Local conditions can be relevant to equipment and fixtures — actual effects depend on your property.
Water heater (tank and tankless)
- What the local report can tell us
- The report's hardness and mineral values above are the system-level inputs most relevant to scale and sediment where water is heated.
- What a homeowner may notice
- Hardness minerals can contribute to scale on heating surfaces, sediment in tanks, and more frequent flushing or descaling needs.
- What the report cannot tell us
- Property-specific outcomes — actual effects depend on temperature, use, equipment design, installation, maintenance, and property plumbing.
- Responsible next step
- Inspect the actual water heater and plumbing when symptoms involve hot-water odor, scale, sediment, corrosion, flow, noise, or repeated service demand.
Dishwasher and washing machine
- What the local report can tell us
- Reported hardness and secondary (aesthetic) records are the relevant system-level context for spotting and residue.
- What a homeowner may notice
- Hard water can change soap behavior and may contribute to spotting on dishes and residue in laundry.
- What the report cannot tell us
- Property-specific outcomes — actual effects depend on temperature, use, equipment design, installation, maintenance, and property plumbing.
- Responsible next step
- Inspect the actual water heater and plumbing when symptoms involve hot-water odor, scale, sediment, corrosion, flow, noise, or repeated service demand.
Pipes, fixtures, faucets, and supply lines
- What the local report can tell us
- The corrosion-related inputs above (such as pH) describe the water entering the property — not the condition of any specific plumbing.
- What a homeowner may notice
- Mineral deposits can appear on aerators and fixtures; corrosion outcomes depend on materials, age, and water conditions together.
- What the report cannot tell us
- Property-specific outcomes — actual effects depend on temperature, use, equipment design, installation, maintenance, and property plumbing.
- Responsible next step
- Inspect the actual water heater and plumbing when symptoms involve hot-water odor, scale, sediment, corrosion, flow, noise, or repeated service demand.
Drinking and cooking water
- What the local report can tell us
- The contaminant records above show what the utility reported for the system and period, with each benchmark type labeled.
- What a homeowner may notice
- Taste, odor, or aesthetic preferences can be noticeable even when health-based standards are met.
- What the report cannot tell us
- Property-specific outcomes — actual effects depend on temperature, use, equipment design, installation, maintenance, and property plumbing.
- Responsible next step
- Inspect the actual water heater and plumbing when symptoms involve hot-water odor, scale, sediment, corrosion, flow, noise, or repeated service demand.
Decision Pathways
Treatment pathways to evaluate
Treatment is a decision pathway, not a product conclusion — no equipment can be responsibly chosen from city-level data alone.
The evaluation sequence we follow, in order:
- 1Define the concern
- 2Verify utility-level and home-specific evidence
- 3Choose point of treatment
- 4Verify the exact certified reduction claim for the exact model
- 5Review tradeoffs and maintenance
Water filtration
- Objective it can address
- Specific substances or aesthetic conditions (taste, odor, chlorine character).
- Point of treatment
- Point of entry or point of use, depending on the objective.
- Limitations to verify
- A filter works only for the conditions and reduction claims its exact design and certification support — filtration does not soften water.
Certification note: a standard number alone doesn't prove a product reduces every contaminant — the exact model's certified claim must match your objective.
Water softening
- Objective it can address
- Hardness minerals (calcium and magnesium) and the scale they can contribute to.
- Point of treatment
- Typically point of entry, confirmed by evaluation.
- Limitations to verify
- Softening primarily exchanges hardness minerals — it is not a universal contaminant-removal device.
Certification note: a standard number alone doesn't prove a product reduces every contaminant — the exact model's certified claim must match your objective.
Reverse osmosis
- Objective it can address
- Specified dissolved substances at a dedicated outlet, commonly drinking and cooking water.
- Point of treatment
- Typically point of use.
- Limitations to verify
- Produces a reject-water stream and needs pressure and maintenance; verify the exact NSF/ANSI 58 reduction claims for the exact model. It is not automatically the best system for every home.
Certification note: a standard number alone doesn't prove a product reduces every contaminant — the exact model's certified claim must match your objective.
When testing is the right next step
Use a certified laboratory when the concern is tap-specific, property-specific, or not resolved by the utility report.
When inspection is the right next step
Inspect the actual water heater and plumbing when symptoms involve hot-water odor, scale, sediment, corrosion, flow, noise, or repeated service demand.
Evidence You Can Check
Official reports, sources, and methodology
Official report — Pasadena Water and Power
Consumer Confidence Report Certification Form · data year 2024 · 2024 data retained; monitor for the next official update
View the 2024 Pasadena Water and Power Consumer Confidence ReportOfficial report — KINNELOA IRRIGATION DISTRICT
2025 CONSUMER CONFIDENCE REPORT · data year 2025 · Current 2025 monitoring cycle
View the 2025 KINNELOA IRRIGATION DISTRICT Consumer Confidence ReportSource water, per the report: Two vertical wells and one groundwater source tunnel. The wells draw from the Raymond Basin, reaching depths of 244 and 443 feet below the ground. Water from these sources is delivered to reservoirs, where it is blended. KID also maintains emergency interconnections with the City of Pasadena.
Official report — LINCOLN AVENUE WATER COMPANY
2025 CONSUMER CONFIDENCE REPORT · data year 2025 · Older retained data; verify the latest publication before republishing
View the 2025 LINCOLN AVENUE WATER COMPANY Consumer Confidence Report (PDF)Source water, per the report: Sixty-three percent of the water came from two wells pumping from the Raymond groundwater basin. Thirty-seven percent of the total was purchased from the Metropolitan Water District of Southern California (MWD), a regional wholesaler of imported surface water. This water is a blend of Colorado River water delivered through MWD’s Colorado River Aqueduct and surface water from Northern California delivered through the State of California Water Project Aqueduct.
Official report — Las Flores Water Company
Annual Drinking Water Quality Report 2025 · data year 2025 · Older retained data; verify the latest publication before republishing
View the 2025 Las Flores Water Company Consumer Confidence Report (PDF)Source water, per the report: Our groundwater source is inactive; Las Flores Water Company purchased 100% of their water from the Metropolitan Water District of Southern California, via a connection with the Foothill Municipal Water District. This water is a blend of Colorado River water delivered through Metropolitan's Colorado River Aqueduct and surface water from Northern California delivered through the State of California Water Project Aqueduct.
Official report — Rubio Cañon Land and Water Association
2025 Annual Water Quality Report · data year 2025 · Current 2025 monitoring cycle
View the 2025 Rubio Cañon Land and Water Association Consumer Confidence ReportSource water, per the report: RCLWA provides potable drinking water via groundwater wells, a conventional treatment plant, and from an imported source. The imported source water is obtained from Foothill Municipal Water District, a member agency of the Metropolitan Water District of Southern California. RCLWA’s treatment plant treats surface water that is acquired from the local foothill area.
Official report — Sunny Slope Water Company
2024 CONSUMER CONFIDENCE REPORT · data year 2024 · 2024 data retained; monitor for the next official update
View the 2024 Sunny Slope Water Company Consumer Confidence ReportSource water, per the report: Sunny Slope Water Company’s water supply comes from five (5) groundwater wells located within the Main San Gabriel Basin and the Raymond Basin. A portion of water from the Raymond Basin goes through the Microvi nitrate removal plant, following the Liquid-Phase Granular Activated Carbon (LGAC) filtration plant, which removes volatile organic compounds (VOCs).
Official report — California American Water - East Pasadena
2025 Annual Water Quality Report Summary · data year 2025 · Current 2025 monitoring cycle
View the 2025 California American Water - East Pasadena Consumer Confidence ReportSource water, per the report: East Pasadena is served entirely by groundwater sources from the Main San Gabriel Basin.
Nearby community water profiles
Property-Specific Next Step
Request a Water Quality Evaluation
Request a water-heater and water-quality evaluation tailored to the property, equipment, and homeowner objective.
A property-specific evaluation confirms your goals, provider, tap conditions, plumbing, equipment, installation, and maintenance before any treatment recommendation — this profile alone is never used to prescribe equipment.
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