We read 21 results from Washington County Pwsd 1’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 700 people · Water system ID MO6024633 · 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 | 1.45 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal7.2x the health goal |
| Radium (combined 226 + 228)highest measured · range 1.2 to 1.2 · sampled 2024 · Purchased water (wholesaler) · 2025 report, page 2 | 1.2 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Bariumhighest measured · range 0.03 to 0.1 · sampled 2024 · Purchased water (wholesaler) · 2025 report, page 2 | 0.1 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range ND to 8.6 · sampled 2024 · Purchased water (wholesaler) · 2025 report, page 3 | 8.6 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 | 0.04 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (TTHM)highest running annual average · range ND to 2.03 · Purchased water: Distribution system · 2025 report, page 2 | 2 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range ND to 0.28 · sampled 2024 · Purchased water (wholesaler) · 2025 report, page 2 | 0.28 ppm | 1 ppm | 4 ppm | Below the health goal |
| Ironhighest measured · range ND to 0.2 · sampled 2024 · Purchased water (wholesaler) · 2025 report, page 3 | 0.2 ppm | — | 0.3 ppm guideline | Within the guideline |
| Manganesehighest measured · range ND to 0.0079 · sampled 2024 · Purchased water (wholesaler) · 2025 report, page 3 | 0.0079 ppm | — | 0.05 ppm guideline | Within the guideline |
| Nitrate (as N)highest measured · range ND to 0.02 · Purchased water (wholesaler) · 2025 report, page 2 | 0.02 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 7.74 to 8.14 · sampled 2024 · Purchased water (wholesaler) · 2025 report, page 3 | 8.14 | — | — | Normal range |
| Sulfatehighest measured · range 28.2 to 54.6 · sampled 2024 · Purchased water (wholesaler) · 2025 report, page 3 | 54.6 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 250 to 403 · sampled 2024 · Purchased water (wholesaler) · 2025 report, page 3 | 403 ppm | — | 500 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.0071 to 0.06 · sampled 2024 · Purchased water (wholesaler) · 2025 report, page 3 | 0.06 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 218 to 372 · sampled 2024 · Purchased water (wholesaler) · 2025 report, page 3 | 372 ppm | None set | None | No health limit |
| Calciumhighest measured · range 44.9 to 80.7 · sampled 2024 · Purchased water (wholesaler) · 2025 report, page 3 | 80.7 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 12.9 to 23.2 · sampled 2024 · Purchased water (wholesaler) · 2025 report, page 3 | 23.2 gpg (396 ppm) | — | — | Very hard |
| Magnesiumhighest measured · range 26.2 to 47.2 · sampled 2024 · Purchased water (wholesaler) · 2025 report, page 3 | 47.2 ppm | None set | None | No health limit |
| Nickelhighest measured · range 1.01 to 3.47 · printed as 0.00347 MG/L · sampled 2024 · Purchased water (wholesaler) · 2025 report, page 3 | 3.47 ppb | None set | None | No health limit |
| Potassiumhighest measured · range ND to 1.83 · sampled 2024 · Purchased water (wholesaler) · 2025 report, page 3 | 1.83 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 4.67 to 9.85 · sampled 2024 · Purchased water (wholesaler) · 2025 report, page 3 | 9.85 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.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
Radium and uranium
Found: Radium (combined 226 + 228)
What removes it: Reverse osmosis.
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