We read 15 results from Indian Wells Valley W.D.’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 41,580 people · Water system ID CA1510017 · 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 |
|---|---|---|---|---|
| Arsenicaverage · range ND to 7.6 · listed as a violation in the report · Wells · 2025 report, page 4 | 1.49 ppb | 0.004 ppb | 10 ppb | Above the health goal373x the health goal |
| Gross alpha (radioactivity)average · range ND to 3.6 · listed as a violation in the report · Wells · 2025 report, page 4 | 1.3 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Lead90th percentile of 31 homes tested, 0 over the action level · listed as a violation in the report · sampled 2024 · Customer taps · 2025 report, page 4 | 0.46 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal2.3x the health goal |
| Chlorideaverage · range 19 to 230 · listed as a violation in the report · sampled 2023 · Wells · 2025 report, page 4 | 76.1 ppm | — | 250 ppm guideline | Within the guideline |
| Chlorineaverage · range 0.53 to 1.17 · listed as a violation in the report · Distribution system · 2025 report, page 4 | 0.83 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 31 homes tested, 0 over the action level · listed as a violation in the report · sampled 2024 · Customer taps · 2025 report, page 4 | 0.23 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (TTHM)average · range ND to 3 · listed as a violation in the report · Distribution system · 2025 report, page 4 | 1.5 ppb | None set | 80 ppb | Below the legal limit |
| Fluorideaverage · range 0.39 to 1.4 · listed as a violation in the report · sampled 2023 · Wells · 2025 report, page 4 | 0.73 ppm | 1 ppm | 2 ppm | Below the health goal |
| Nitrate (as N)average · range ND to 2.1 · listed as a violation in the report · Wells · 2025 report, page 4 | 1.5 ppm | 10 ppm | 10 ppm | Below the health goal |
| Sulfateaverage · range 24 to 53 · listed as a violation in the report · sampled 2023 · Wells · 2025 report, page 4 | 41 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidsaverage · range 190 to 550 · listed as a violation in the report · sampled 2023 · Wells · 2025 report, page 4 | 323 ppm | — | 500 ppm guideline | Within the guideline |
| Hardnessaverage · range 0.76 to 7.6 · sampled 2023 · Wells · 2025 report, page 5 | 4.33 gpg (74 ppm) | — | — | Moderately hard |
| Lithiumaverage · range 14.3 to 133 · Wells · 2025 report, page 5 | 39 ppb | None set | None | No health limit |
| Sodiumaverage · range 42 to 190 · sampled 2023 · Wells · 2025 report, page 5 | 89.1 ppm | None set | None | No health limit |
| Vanadiumaverage · range ND to 45 · sampled 2023 · Wells · 2025 report, page 5 | 12.4 ppb | 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.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Indian Wells Valley W.D.’s water between Mar 2025 and Nov 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium133 ppbFound in 17 of 17 samples · highest resultAbove EPA’s health reference level of 10 ppb (a guide, not a legal limit)
Source: EPA UCMR 5 occurrence data. The highest single result is shown; one high sample doesn’t mean every glass is that high.
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)
What removes it: Reverse osmosis.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
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