Your Local Water Profile: Santa Rosa Valley
This profile explains what the applicable water provider reported for Santa Rosa Valley, what those results may mean throughout a home, and where property-specific testing or inspection may still be needed.
Water provider: Camrosa Water District
Public water system CA5610063 · 2024 report · 2024 data retained; monitor for the next official update
View the 2024 Camrosa Water District Consumer Confidence ReportWhat the official water report says
Your water at a glance
Camrosa Water District
The report lists hardness as 148 ppm; 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.
Camrosa Water District — compliance, as reported
The report states: “We are pleased to present to you this year’s annual water quality report. This report is a snapshot of last year’s water quality covering all testing performed between January 1 and December 31, 2024. Included are details about your sources of water, what it contains, and how it compares to standards set by regulatory agencies. Our constant goal is to provide you with a safe and dependable supply of drinking water.”
Violations or advisories, as reported: During the past year, we were required to conduct one Level 1 assessment, which we completed. In addition, we were required to take one corrective action, which we completed. No violations were reported for regulated or secondary substances.
The Three C's — 1 of 3
Chemistry
What does this water tend to do in a home?
Hardness, Total [as CaCO3]
The utility reported: 148 ppm
Calleguas Imported Water · report p. PAGE 7 · official report
Specific Conductance
The utility reported: 510 µS/cm
Calleguas Imported Water · report p. PAGE 7 · official report
Total Dissolved Solids
The utility reported: 306 ppm
Calleguas Imported Water · report p. PAGE 7 · official report
Odor, Threshold
The utility reported: 1 TON
Calleguas Imported Water · report p. PAGE 7 · official report
Nitrate [as nitrogen]
The utility reported: 0.5 ppm
Calleguas Imported Water · report p. PAGE 5 · 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.
Camrosa Water District — regulated contaminants reported as detected (20)
Chlorine Residual
The utility reported: LRAA 1.15 ppm
Reported range: ND - 2.4
Benchmark: 4 · Health goal (goal): 4 — not an enforceable limit
Violation per report: No
Typical source, per the report: Water additive used to control microbes
Reported constituent · report p. PAGE 4 · official report
Haloacetic Acids [HAAs]
The utility reported: LRAA 5.0 ppb
Reported range: ND - 8
Benchmark: 60 · Health goal (goal): NA — not an enforceable limit
Violation per report: No
Typical source, per the report: By-product of drinking water disinfection
Reported constituent · report p. PAGE 4 · official report
Trihalomethanes [TTHMs]
The utility reported: LRAA 13.0 ppb
Reported range: ND - 17
Benchmark: 80 · Health goal (goal): NA — not an enforceable limit
Violation per report: No
Typical source, per the report: By-product of drinking water disinfection
Reported constituent · report p. PAGE 4 · official report
Turbidity
The utility reported: 0.67 NTU
Reported range: 0.05 - 0.67
Benchmark: TT · Health goal (goal): NA — not an enforceable limit
Violation per report: No
Typical source, per the report: Soil runoff
Reported constituent · report p. PAGE 4 · official report
Turbidity (lowest monthly percent of samples meeting limit)
The utility reported: 98.8% of samples <= 0.3
Reported range: NA
Benchmark: TT · Health goal (goal): NA — not an enforceable limit
Violation per report: No
Typical source, per the report: Soil runoff
Reported constituent · report p. PAGE 4 · official report
Copper
The utility reported: 0.22 ppm
Reported range: 0-0.55
Benchmark: 1.3 · Health goal (goal): 0.3 — not an enforceable limit
Violation per report: No
Typical source, per the report: Internal corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives
Reported constituent · report p. PAGE 4 · official report
Lead
The utility reported: 0 ppb
Reported range: 0-5
Benchmark: 15 · Health goal (goal): 0.2 — not an enforceable limit
Violation per report: No
Typical source, per the report: Internal corrosion of household water plumbing systems; discharges from industrial manufacturers; erosion of natural deposits
Reported constituent · report p. PAGE 4 · official report
Aluminum
The utility reported: 0.062 ppm
Reported range: 0.052–0.091
Benchmark: 1 · Health goal (goal): 0.6 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits; Residue from some surface water treatment processes
Reported constituent · report p. PAGE 5 · official report
Arsenic
The utility reported: 0.06 ppb
Reported range: 0.04–0.08
Benchmark: 10 · Health goal (goal): 0.004 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits; Runoff from orchards; Glass and electronics production wastes
Reported constituent · report p. PAGE 5 · official report
Bromate
The utility reported: 3.1 ppb
Reported range: ND–5.4
Benchmark: 10 · Health goal (goal): 0.1 — not an enforceable limit
Violation per report: No
Typical source, per the report: By-product of drinking water disinfection
Reported constituent · report p. PAGE 5 · official report
Chlorine
The utility reported: 0.0023 ppm
Reported range: 0.0017–0.0028
Benchmark: [4.0 (as Cl2)] · Health goal (goal): [4 (as Cl2)] — not an enforceable limit
Violation per report: No
Typical source, per the report: Drinking water disinfectant added for treatment
Reported constituent · report p. PAGE 5 · official report
Fluoride
The utility reported: 0.7 ppm
Reported range: 0.6–1.0
Benchmark: 2.0 · Health goal (goal): 1 — not an enforceable limit
Violation per report: No
Typical source, per the report: Erosion of natural deposits; Water additive that promotes strong teeth; Discharge from fertilizer and aluminum factories
Reported constituent · report p. PAGE 5 · official report
Gross Beta Particle Activity
The utility reported: 0.11 pCi/L
Reported range: 0.108–0.112
Benchmark: 50 · Health goal (goal): (0) — not an enforceable limit
Violation per report: No
Typical source, per the report: Decay of natural and human-made deposits
Reported constituent · report p. PAGE 5 · official report
Haloacetic Acids
The utility reported: 12.0 ppb
Reported range: 6.0–22.0
Benchmark: 60 · Health goal (goal): NA — not an enforceable limit
Violation per report: No
Typical source, per the report: By-product of drinking water disinfection
Reported constituent · report p. PAGE 5 · official report
Heterotrophic Plate Count Bacteria
The utility reported: Not detected at the report's stated reporting limit CFU/mL
Reported range: ND–2
Benchmark: TT · Health goal (goal): NA — not an enforceable limit
Violation per report: No
Typical source, per the report: Naturally present in the environment
Reported constituent · report p. PAGE 5 · official report
Nitrate [as nitrogen]
The utility reported: 0.5 ppm
Reported range: 0.5–0.5
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; Leaching from septic tanks and sewage; Erosion of natural deposits
Reported constituent · report p. PAGE 5 · official report
Selenium
The utility reported: Not detected at the report's stated reporting limit ppb
Reported range: ND–0.12
Benchmark: 50 · Health goal (goal): 30 — not an enforceable limit
Violation per report: No
Typical source, per the report: Discharge from petroleum, glass, and metal refineries; Erosion of natural deposits; Discharge from mines and chemical manufacturers; Runoff from livestock lots (feed additive)
Reported constituent · report p. PAGE 5 · official report
Total Trihalomethanes
The utility reported: 21.8 ppb
Reported range: 13.0–36.0
Benchmark: 80 · Health goal (goal): NA — not an enforceable limit
Violation per report: No
Typical source, per the report: By-product of drinking water disinfection
Reported constituent · report p. PAGE 5 · official report
Turbidity
The utility reported: 0.04 NTU
Reported range: NA
Benchmark: TT · Health goal (goal): NA — not an enforceable limit
Violation per report: No
Typical source, per the report: Soil runoff
Reported constituent · report p. PAGE 5 · official report
Uranium
The utility reported: 2.0 pCi/L
Reported range: 1.9–3.0
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. PAGE 5 · official report
Camrosa Water District — unregulated monitoring and secondary (aesthetic) records (16)
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.
Alkalinity
The utility reported: 98 ppm
Reported range: 94–101
Typical source, per the report: NA
Reported constituent · report p. PAGE 7 · official report
Boron
The utility reported: 0.17 ppm
Reported range: 0.17–0.17
Typical source, per the report: NA
Reported constituent · report p. PAGE 7 · official report
Calcium
The utility reported: 38 ppm
Reported range: 38–39
Typical source, per the report: NA
Reported constituent · report p. PAGE 7 · official report
Chlorate
The utility reported: 71 ppb
Reported range: 71–71
Typical source, per the report: NA
Reported constituent · report p. PAGE 7 · official report
Hardness, Total [as CaCO3]
The utility reported: 148 ppm
Reported range: 143–153
Typical source, per the report: NA
Reported constituent · report p. PAGE 7 · official report
pH
The utility reported: 8.3 units
Reported range: 8.2–8.3
Typical source, per the report: NA
Reported constituent · report p. PAGE 7 · official report
Potassium
The utility reported: 2.6 ppm
Reported range: 2.6–2.6
Typical source, per the report: NA
Reported constituent · report p. PAGE 7 · official report
Sodium
The utility reported: 46 ppm
Reported range: 46–46
Typical source, per the report: NA
Reported constituent · report p. PAGE 7 · official report
Total Organic Carbon [TOC]
The utility reported: 2.4 ppm
Reported range: 2.0–2.5
Typical source, per the report: NA
Reported constituent · report p. PAGE 7 · official report
Aluminum
The utility reported: 62 ppb
Reported range: 52–91
Typical source, per the report: Erosion of natural deposits; Residual from some surface water treatment processes
Reported constituent · report p. PAGE 7 · official report
Chloride
The utility reported: 40 ppm
Reported range: 39–41
Typical source, per the report: Runoff/leaching from natural deposits; Seawater influence
Reported constituent · report p. PAGE 7 · official report
Color
The utility reported: 1 units
Reported range: 1–1
Typical source, per the report: Naturally occurring organic materials
Reported constituent · report p. PAGE 7 · official report
Corrosivity
The utility reported: 12.2 units
Reported range: 12.2–12.2
Typical source, per the report: Natural or industrially influenced balance of hydrogen, carbon, and oxygen affected by temperature and other factors
Reported constituent · report p. PAGE 7 · official report
Specific Conductance
The utility reported: 510 µS/cm
Reported range: 498–522
Typical source, per the report: Substances that form ions when in water; Seawater influence
Reported constituent · report p. PAGE 7 · official report
Sulfate
The utility reported: 90 ppm
Reported range: 89–92
Typical source, per the report: Runoff/leaching from natural deposits; Industrial wastes
Reported constituent · report p. PAGE 7 · official report
Total Dissolved Solids
The utility reported: 306 ppm
Reported range: 291–322
Typical source, per the report: Runoff/leaching from natural deposits
Reported constituent · report p. PAGE 7 · official report
The Three C's — 3 of 3
Corrosion
What conditions could influence pipes, fixtures, and a water heater?
Copper
The utility reported: 0.22 ppm
Reported range: 0-0.55
Typical source, per the report: Internal corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives
Reported constituent · report p. PAGE 4 · official report
Lead
The utility reported: 0 ppb
Reported range: 0-5
Typical source, per the report: Internal corrosion of household water plumbing systems; discharges from industrial manufacturers; erosion of natural deposits
Reported constituent · report p. PAGE 4 · official report
Heterotrophic Plate Count Bacteria
The utility reported: Not detected at the report's stated reporting limit CFU/mL
Reported range: ND–2
Typical source, per the report: Naturally present in the environment
Reported constituent · report p. PAGE 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 — Camrosa Water District
Annual Water Quality Report · data year 2024 · 2024 data retained; monitor for the next official update
View the 2024 Camrosa Water District Consumer Confidence ReportSource water, per the report: Camrosa uses a combination of imported and local water. Camrosa Water District operates nine wells in addition to importing water from Calleguas Municipal Water District (a distributor for the Metropolitan Water District of Southern California). In 2024 approximately 55 percent of the water came from these local wells, and the rest was imported. Local sources include GAC Plant, Penny Well, Woodcreek Well, PV Well 2, RMWTP, and Tierra Rejada Well.
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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