We read 18 results from Desert Water Agency’s 2025 water quality report. No results over a legal limit; 4 above a health goal or guideline.
Serves about 74,807 people · Water system ID CA3310005 · 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 |
|---|---|---|---|---|
| Chromium-6average · range ND to 4.4 · Groundwater source · 2025 report, page 5 | 1.5 ppb | 0.02 ppb | 10 ppb | Above the health goal75x the health goal |
| Gross alpha (radioactivity)average · range 3.9 to 17 · Groundwater source, highest of 2 sources · 2025 report, page 4 | 8.4 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| PFOS (a PFAS)single sample · DWA water · 2025 report, page 5 | 5.5 ppt | 1 ppt | 4 ppt from 2029 | Above the federal limit that takes effect in 20291.4x the 4 ppt federal limit that takes effect in 2029Not a violation yet: EPA's 4 ppt limit is final, but water systems don't have to meet it until 2029. |
| Uraniumaverage · range ND to 22.4 · printed as 6 pCi/L · Groundwater source, highest of 2 sources · 2025 report, page 4 | 8.94 ppb | 0.6 ppb | 30 ppb | Above the health goal15x the health goal |
| Bariumaverage · range 0.03 to 0.08 · Surface water source (Snow Creek plant), highest of 2 sources · 2025 report, page 5 | 0.06 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorideaverage · range 9.5 to 99 · Groundwater source, highest of 2 sources · 2025 report, page 5 | 52 ppm | — | 250 ppm guideline | Within the guideline |
| Chlorineaverage · range 0.48 to 2.1 · Surface water source (Snow Creek plant), highest of 2 sources · 2025 report, page 4 | 1.21 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 30 homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 4 | 0.18 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 16 to 32 · Surface water source (Snow Creek plant) · 2025 report, page 4 | 22 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 15 to 31 · Surface water source (Snow Creek plant), highest of 2 sources · 2025 report, page 4 | 22 ppb | None set | 80 ppb | Below the legal limit |
| Fluorideaverage · range ND to 0.58 · Groundwater source · 2025 report, page 4 | 0.35 ppm | 1 ppm | 2 ppm | Below the health goal |
| Lead90th percentile of 30 homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 4 | Not detected | 0.2 ppb | 15 ppb (action level) | Not detected |
| Nitrate (as N)average · range ND to 2.5 · Groundwater source · 2025 report, page 4 | 0.74 ppm | 10 ppm | 10 ppm | Below the health goal |
| Sulfateaverage · range 24 to 210 · Groundwater source, highest of 2 sources · 2025 report, page 5 | 130 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidsaverage · range 180 to 640 · Groundwater source, highest of 2 sources · 2025 report, page 5 | 420 ppm | — | 500 ppm guideline | Within the guideline |
| Turbidity (cloudiness)average · range 0.14 to 0.29 · Groundwater source, highest of 2 sources · 2025 report, page 4 | 0.22 NTU | None set | 1 NTU | Below the legal limit |
| Hardnessaverage · range 5.5 to 19.9 · Groundwater source, highest of 2 sources · 2025 report, page 5 | 14 gpg (240 ppm) | — | — | Very hard |
| Sodiumaverage · range 16 to 79 · Groundwater source, highest of 2 sources · 2025 report, page 5 | 42 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 here is an emergency notice: if the district has a violation, it must tell customers directly. If you’d like to lower these at your tap, these are the treatments that remove them, and the catalog shows the models certified for each. Ranking is by certified removal; commissions never change the order.
Radium and uranium
Found: Gross alpha (radioactivity), Uranium
What removes it: Reverse osmosis.
PFAS ("forever chemicals")
Found: PFOS (a PFAS)
What removes it: Reverse osmosis.
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