We read 21 results from El Dorado Springs Pws’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 3,593 people · Water system ID MO5010241 · 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 |
|---|---|---|---|---|
| Lead90th percentile of homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 2 | 1.11 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal5.6x the health goal |
| Radium (combined 226 + 228)highest measured · range 2.2 to 2.2 · sampled 2022 · 2025 report, page 2 | 2.2 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Radium-226highest measured · range 2.2 to 2.2 · sampled 2022 · 2025 report, page 2 | 2.2 pCi/L | 0.05 pCi/L | 5 pCi/L | Above the health goal44x the health goal |
| Bariumhighest measured · range 0.13 to 0.13 · 2025 report, page 2 | 0.13 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 134 to 147 · 2025 report, page 3 | 147 ppm | — | 250 ppm guideline | Within the guideline |
| Copper90th percentile of homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 2 | 0.1 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Fluoridehighest measured · range 0.47 to 0.52 · 2025 report, page 2 | 0.52 ppm | 1 ppm | 4 ppm | Below the health goal |
| Ironhighest measured · range 0.03 to 0.11 · 2025 report, page 3 | 0.11 ppm | — | 0.3 ppm guideline | Within the guideline |
| Manganesehighest measured · range 0.0011 to 0.0026 · 2025 report, page 3 | 0.0026 ppm | — | 0.05 ppm guideline | Within the guideline |
| pHhighest measured · range 8.12 to 8.32 · 2025 report, page 3 | 8.32 | — | — | Normal range |
| Sulfatehighest measured · range 25.1 to 26 · 2025 report, page 3 | 26 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 396 to 404 · 2025 report, page 3 | 404 ppm | — | 500 ppm guideline | Within the guideline |
| Zinchighest measured · range ND to 0.0037 · 2025 report, page 3 | 0.0037 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 180 to 186 · 2025 report, page 3 | 186 ppm | None set | None | No health limit |
| Calciumhighest measured · range 40 to 42 · 2025 report, page 3 | 42 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 10.5 to 10.9 · 2025 report, page 3 | 10.9 gpg (186 ppm) | — | — | Very hard |
| Lithiumhighest measured · range 78 to 96 · sampled 2023 · highest of 2 sources · 2025 report, page 3 | 96 ppb | None set | None | No health limit |
| Magnesiumhighest measured · range 19.2 to 19.6 · 2025 report, page 3 | 19.6 ppm | None set | None | No health limit |
| Nickelhighest measured · range ND to 1.58 · printed as 0.00158 MG/L · 2025 report, page 3 | 1.58 ppb | None set | None | No health limit |
| Potassiumhighest measured · range 4.47 to 4.73 · 2025 report, page 3 | 4.73 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 86.1 to 88.5 · 2025 report, page 3 | 88.5 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.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in El Dorado Springs Pws’s water between Mar 2023 and Sep 2023. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium96 ppbFound in 6 of 6 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.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
Radium and uranium
Found: Radium (combined 226 + 228), Radium-226
What removes it: Reverse osmosis.
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