We read 11 results from Scwa Mather-Sunrise’s 2025 water quality report. No results over a legal limit or above a health goal.
Serves about 30,825 people · Water system ID CA3410704 · Read the district’s 2025 report (opens in a new tab)
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Results from the 2025 report
Each number is copied from the district’s report and links to the page it’s printed on. Where the report lists several plants, wells or purchased water, the highest is shown.
| Contaminant | Result | Health goal | Legal limit | What it means |
|---|---|---|---|---|
| Chlorideaverage · range 3.2 to 7 · Groundwater · 2025 report | 5.4 ppm | — | 250 ppm guideline | Within the guideline |
| Chlorineaverage · range 0.2 to 1.7 · Distribution system · 2025 report | 1.41 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 31 homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report | 0.08 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)average · range 20 to 34 · Distribution system · 2025 report | 31 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)average · range 38 to 63 · Distribution system · 2025 report | 52.8 ppb | None set | 80 ppb | Below the legal limit |
| Fluorideaverage · range 0.51 to 0.84 · Distribution system · 2025 report | 0.71 ppm | 1 ppm | 2 ppm | Below the health goal |
| Lead90th percentile of 31 homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Total dissolved solidsaverage · range 91 to 170 · Surface water, highest of 2 sources · 2025 report | 127 ppm | — | 500 ppm guideline | Within the guideline |
| Turbidity (cloudiness)highest measured · listed as a violation in the report · sampled 2024 · Treatment plant · 2025 report | 0.07 NTU | None set | 1 NTU | Below the legal limit |
| Hardnessaverage · range 2.75 to 3.63 · Groundwater · 2025 report | 3.22 gpg (55 ppm) | — | — | Soft |
| Sodiumaverage · range 8.5 to 16 · Groundwater, highest of 2 sources · 2025 report | 15 ppm | None set | None | No health limit |
Utility results describe the whole system, measured where water enters the pipes, not your tap. Your home’s plumbing can add lead or copper.
What you can do
Nothing in this report is above a health goal or legal limit. If you’re bothered by taste, smell, hardness or spots, or your home has older pipes, the filter catalog and buyer questions can help you pick, and a test of your own tap shows what your plumbing adds.
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