Your Local Water Profile: Santa Ana
This profile explains what the applicable water provider reported for Santa Ana, what those results may mean throughout a home, and where property-specific testing or inspection may still be needed.
Water provider: City of Santa Ana
Public water system CA3010038 · 2024 report · 2024 data retained; monitor for the next official update
View the 2024 City of Santa Ana Consumer Confidence ReportWhat the official water report says
Your water at a glance
City of Santa Ana
The report lists hardness as 242 ppm as CaCO3; this is not classified because the reported unit could not be normalized 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.
City of Santa Ana — compliance, as reported
The report states: “In 2024, Santa Ana's tap water met all federal and state drinking water health standards. Our commitment to water quality remains steadfast, and once again, we are proud to report that our system has never exceeded a maximum contaminant level or any other water quality standard. [p. 4]”
Violations or advisories, as reported: No violations. The report states: 'In 2024, Santa Ana's tap water met all federal and state drinking water health standards. Our commitment to water quality remains steadfast, and once again, we are proud to report that our system has never exceeded a maximum contaminant level or any other water quality standard.' (p. 4). Special user groups (kidney dialysis patients, aquarium owners, and businesses/industries) are advised to remove chloramines and chlorine prior to use (p. 17).
The Three C's — 1 of 3
Chemistry
What does this water tend to do in a home?
Hardness, total
The utility reported: 4.3 grains/gal
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Hardness, total
The utility reported: 242 ppm as CaCO3
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Calcium
The utility reported: 73 ppm
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Magnesium
The utility reported: 14 ppm
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
pH
The utility reported: 8 pH units
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Alkalinity, total
The utility reported: 164 ppm as CaCO3
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Total Dissolved Solids
The utility reported: 395 ppm
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Chloride
The utility reported: 44 ppm
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Sulfate
The utility reported: 84 ppm
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Sodium
The utility reported: 43.6 ppm
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Lead
The utility reported: Not detected at the report's stated reporting limit ppb
LEAD AND COPPER ACTION LEVELS AT RESIDENTIAL TAPS · report p. 15 · official report
Copper
The utility reported: 0.17 ppm
LEAD AND COPPER ACTION LEVELS AT RESIDENTIAL TAPS · report p. 15 · official report
Chlorine Residual
The utility reported: 1.01 ppm
2024 CITY OF SANTA ANA DISTRIBUTION SYSTEM'S WATER QUALITY · report p. 14 · official report
Hardness, total
The utility reported: 270 ppm as CaCO3
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Hardness, total
The utility reported: 16 grains/gallon
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Calcium
The utility reported: 68 ppm
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Magnesium
The utility reported: 26 ppm
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
pH
The utility reported: 8.2 units
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Alkalinity, total
The utility reported: 114 ppm as CaCO3
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Total Dissolved Solids
The utility reported: 621 ppm
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Chloride
The utility reported: 104 ppm
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Sulfate
The utility reported: 224 ppm
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · 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.
City of Santa Ana — regulated contaminants reported as detected (16)
Chlorine Residual
The utility reported: 1.01 ppm
Reported range: ND - 2.9
MRDL: 4 · Health goal (MRDLG): 4 — not an enforceable limit
Violation per report: No
Typical source, per the report: Disinfectant Added for Treatment
DISINFECTANT RESIDUAL AND DISINFECTION BY-PRODUCTS · report p. 14 · official report
Total Trihalomethanes
The utility reported: 45 ppb
Reported range: ND - 34
Legal limit (MCL): 80
Violation per report: No
Typical source, per the report: Byproducts of Chlorine Disinfection
DISINFECTANT RESIDUAL AND DISINFECTION BY-PRODUCTS · report p. 14 · official report
Haloacetic Acids
The utility reported: 17 ppb
Reported range: ND - 10
Legal limit (MCL): 60
Violation per report: No
Typical source, per the report: Byproducts of Chlorine Disinfection
DISINFECTANT RESIDUAL AND DISINFECTION BY-PRODUCTS · report p. 14 · official report
Uranium
The utility reported: 2.6 pCi/l
Reported range: ND - 4.9
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
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Fluoride
The utility reported: 0.33 ppm
Reported range: 0.18 - 0.42
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
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Hexavalent Chromium
The utility reported: 1.4 ppb
Reported range: 0.29 - 2.3
Legal limit (MCL): 10 · Health goal (PHG): 0.02 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of Natural Deposits
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Nitrate
The utility reported: 2 ppm as N
Reported range: 0.52 - 3.5
Legal limit (MCL): 10 · Health goal (PHG): 10 — not an enforceable limit
Violation per report: No
Typical source, per the report: Runoff and Leaching from Fertilizer Use; Leaching from Septic Tanks and Sewage; Erosion of Natural Deposits
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Nitrate + Nitrite
The utility reported: 2 ppm as N
Reported range: 0.52 - 3.5
Legal limit (MCL): 10 · Health goal (PHG): 10 — not an enforceable limit
Violation per report: No
Typical source, per the report: Runoff and Leaching from Fertilizer Use; Leaching from Septic Tanks and Sewage; Erosion of Natural Deposits
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Perchlorate
The utility reported: 1.2 ppb
Reported range: ND - 2.8
Legal limit (MCL): 6 · Health goal (PHG): 1 — not an enforceable limit
Violation per report: No
Typical source, per the report: Discharge from Industrial Operations
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Gross Beta Particle Activity
The utility reported: 4 pCi/L
Reported range: ND - 5
Legal limit (MCL): 50 · Health goal (PHG): (0) — not an enforceable limit
Violation per report: No
Typical source, per the report: Decay of Natural and Man-made Deposits
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Uranium
The utility reported: 1 pCi/L
Reported range: ND - 3
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
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Barium
The utility reported: 0.124 ppm
Reported range: 0.124
Legal limit (MCL): 1 · Health goal (PHG): 2 — not an enforceable limit
Violation per report: No
Typical source, per the report: Refinery Discharge, Erosion of Natural Deposits
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Fluoride
The utility reported: 0.7 ppm
Reported range: 0.6 - 0.8
Legal limit (MCL): 2 · Health goal (PHG): 1 — not an enforceable limit
Violation per report: No
Typical source, per the report: Water Additive for Dental Health
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Total Organic Carbon
The utility reported: 2.4 ppm
Reported range: 2 - 2.5
TT: TT
Violation per report: NA
Typical source, per the report: Various Natural and Man-made Sources
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 16 · official report
Turbidity - Highest single measurement
The utility reported: 0.06 NTU
TT: 0.3
Violation per report: No
Typical source, per the report: Soil Runoff
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 16 · official report
Turbidity - Percentage of samples <= 0.3 NTU
The utility reported: 100% %
TT: 95%
Violation per report: No
Typical source, per the report: Soil Runoff
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 16 · official report
City of Santa Ana — unregulated monitoring and secondary (aesthetic) records (30)
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: Not detected at the report's stated reporting limit color units
Reported range: ND - 10
Typical source, per the report: Naturally-Occuring Organic Materials
AESTHETIC QUALITY · report p. 14 · official report
Odor
The utility reported: 1 threshold odor number
Reported range: 1-2
Typical source, per the report: Naturally-Occuring Organic Materials
AESTHETIC QUALITY · report p. 14 · official report
Turbidity
The utility reported: Not detected at the report's stated reporting limit ntu
Reported range: ND - 1.1
Typical source, per the report: Erosion of Natural Deposits
AESTHETIC QUALITY · report p. 14 · official report
Bromide
The utility reported: 0.13 ppm
Reported range: 0.062 - 0.29
UNREGULATED CHEMICALS REQUIRING MONITORING · report p. 14 · official report
Lithium
The utility reported: 4.4 ppb
Reported range: ND - 35
UNREGULATED CHEMICALS REQUIRING MONITORING · report p. 14 · official report
Perfluoro Hexane Sulfonic Acid
The utility reported: 2.7 ppt
Reported range: ND - 7.3
UNREGULATED CHEMICALS REQUIRING MONITORING · report p. 14 · official report
Perfluoro Octane Sulfonic Acid
The utility reported: 3.8 ppt
Reported range: ND - 13
UNREGULATED CHEMICALS REQUIRING MONITORING · report p. 14 · official report
Perfluoro Octanoic Acid
The utility reported: 2.4 ppt
Reported range: ND - 7.5
UNREGULATED CHEMICALS REQUIRING MONITORING · report p. 14 · official report
Total Organic Carbon (Unfiltered)
The utility reported: 0.18 ppm
Reported range: 0.08 - 0.29
UNREGULATED CHEMICALS REQUIRING MONITORING · report p. 14 · official report
Bromochloroacetic acid
The utility reported: 0.81 ppb
Reported range: ND - 3.9
UNREGULATED CHEMICALS REQUIRING MONITORING IN THE DISTRIBUTION SYSTEM · report p. 14 · official report
Bromodichloroacetic acid
The utility reported: 0.86 ppb
Reported range: ND - 2.1
UNREGULATED CHEMICALS REQUIRING MONITORING IN THE DISTRIBUTION SYSTEM · report p. 14 · official report
Chlorodibromoacetic acid
The utility reported: 0.55 ppb
Reported range: ND - 1.4
UNREGULATED CHEMICALS REQUIRING MONITORING IN THE DISTRIBUTION SYSTEM · report p. 14 · official report
Dibromoacetic acid
The utility reported: 0.66 ppb
Reported range: ND - 2.0
UNREGULATED CHEMICALS REQUIRING MONITORING IN THE DISTRIBUTION SYSTEM · report p. 14 · official report
Dichloroacetic acid
The utility reported: 1.1 ppb
Reported range: ND - 6.1
UNREGULATED CHEMICALS REQUIRING MONITORING IN THE DISTRIBUTION SYSTEM · report p. 14 · official report
Trichloroacetic acid
The utility reported: 1.0 ppb
Reported range: ND - 2.5
UNREGULATED CHEMICALS REQUIRING MONITORING IN THE DISTRIBUTION SYSTEM · report p. 14 · official report
Chloride
The utility reported: 44 ppm
Reported range: 21 - 71
Typical source, per the report: Erosion of Natural Deposits
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Specific Conductance
The utility reported: 629 umho/cm
Reported range: 460 - 789
Typical source, per the report: Substance that forms Ions when in water
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Sulfate
The utility reported: 84 ppm
Reported range: 51 - 130
Typical source, per the report: Erosion of Natural Deposits
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Total Dissolved Solids
The utility reported: 395 ppm
Reported range: 274 - 488
Typical source, per the report: Erosion of Natural Deposits
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Bicarbonate
The utility reported: 202 ppm as HC03
Reported range: 178 - 219
Typical source, per the report: Erosion of Natural Deposits
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Potassium
The utility reported: 2.3 ppm
Reported range: 1.5 - 2.9
Typical source, per the report: Erosion of Natural Deposits
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Chloride
The utility reported: 104 ppm
Reported range: 93 - 116
Typical source, per the report: Runoff or Leaching from Natural Deposits
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Color
The utility reported: 2 color units
Reported range: 1-2
Typical source, per the report: Runoff or Leaching from Natural Deposits
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Odor
The utility reported: 1 threshold odor number
Reported range: 1
Typical source, per the report: Naturally-occurring Organic Materials
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Specific Conductance
The utility reported: 979 µmho/cm
Reported range: 888 - 1,070
Typical source, per the report: Substances That Form Ions In Water
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Sulfate
The utility reported: 224 ppm
Reported range: 196 - 253
Typical source, per the report: Runoff or Leaching from Natural Deposits
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Total Dissolved Solids
The utility reported: 621 ppm
Reported range: 556 - 686
Typical source, per the report: Runoff or Leaching from Natural Deposits
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Boron
The utility reported: 0.14 ppm
Reported range: 0.14
Typical source, per the report: Runoff or Leaching from Natural Deposits
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Potassium
The utility reported: 4.9 ppm
Reported range: 4.4 - 5.4
Typical source, per the report: Runoff or Leaching from Natural Deposits
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Lithium
The utility reported: 22 ppb
Reported range: ND - 36
UNREGULATED CONSTITUENTS REQUIRING MONITORING · report p. 16 · official report
The Three C's — 3 of 3
Corrosion
What conditions could influence pipes, fixtures, and a water heater?
pH
The utility reported: 8 pH units
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Alkalinity, total
The utility reported: 164 ppm as CaCO3
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Chloride
The utility reported: 44 ppm
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Sulfate
The utility reported: 84 ppm
2024 CITY OF SANTA ANA GROUNDWATER QUALITY · report p. 15 · official report
Lead
The utility reported: Not detected at the report's stated reporting limit ppb
LEAD AND COPPER ACTION LEVELS AT RESIDENTIAL TAPS · report p. 15 · official report
Copper
The utility reported: 0.17 ppm
LEAD AND COPPER ACTION LEVELS AT RESIDENTIAL TAPS · report p. 15 · official report
pH
The utility reported: 8.2 units
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Alkalinity, total
The utility reported: 114 ppm as CaCO3
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Chloride
The utility reported: 104 ppm
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · official report
Sulfate
The utility reported: 224 ppm
2024 METROPOLITAN WATER DISTRICT OF SOUTHERN CALIFORNIA TREATED SURFACE WATER QUALITY · report p. 15 · 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 — City of Santa Ana
2024 WATER QUALITY REPORT · data year 2024 · 2024 data retained; monitor for the next official update
View the 2024 City of Santa Ana Consumer Confidence ReportSource water, per the report: The City of Santa Ana delivers water from two sources: 85% groundwater from the Orange County Groundwater Basin (pumped using 20 city-owned wells) and 15% imported water from the Metropolitan Water District of Southern California (MWD), which transports Colorado River water and State Water Project water from Northern California.
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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