We read 21 results from Pevely Pws’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 5,600 people · Water system ID MO6010638 · 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 |
|---|---|---|---|---|
| Arsenichighest measured · range ND to 2.89 · sampled 2023 · 2025 report, page 2 | 2.89 ppb | 0.004 ppb | 10 ppb | Above the health goal723x the health goal |
| Lead90th percentile of homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 2 | 2.21 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal11x the health goal |
| Total dissolved solidshighest measured · range 252 to 579 · sampled 2023 · 2025 report, page 3 | 579 ppm | — | 500 ppm guideline | Above the guideline1.2x the guideline (taste, odor or stains; not a health limit) |
| Bariumhighest measured · range 0.1 to 0.1 · sampled 2023 · 2025 report, page 2 | 0.1 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range ND to 156 · sampled 2023 · 2025 report, page 3 | 156 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 | 0.08 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 1.37 to 1.37 · DBPDUAL-01 · 2025 report, page 2 | 1 ppb | None set | 60 ppb | Below the legal limit |
| Fluoridehighest measured · range ND to 0.22 · sampled 2023 · 2025 report, page 2 | 0.22 ppm | 1 ppm | 4 ppm | Below the health goal |
| Ironhighest measured · range 0.02 to 0.12 · sampled 2023 · 2025 report, page 3 | 0.12 ppm | — | 0.3 ppm guideline | Within the guideline |
| Manganesehighest measured · range ND to 0.0074 · sampled 2023 · 2025 report, page 3 | 0.0074 ppm | — | 0.05 ppm guideline | Within the guideline |
| Nitrate (as N)highest measured · range ND to 0.01 · 2025 report, page 2 | 0.01 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 7.73 to 7.91 · sampled 2023 · 2025 report, page 3 | 7.91 | — | — | Normal range |
| Sulfatehighest measured · range 23 to 31.1 · sampled 2023 · 2025 report, page 3 | 31.1 ppm | — | 250 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.02 to 0.12 · sampled 2023 · 2025 report, page 3 | 0.12 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 241 to 296 · sampled 2023 · 2025 report, page 3 | 296 ppm | None set | None | No health limit |
| Calciumhighest measured · range 54.7 to 74.1 · sampled 2023 · 2025 report, page 3 | 74.1 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 14.9 to 18.8 · sampled 2023 · 2025 report, page 3 | 18.8 gpg (321 ppm) | — | — | Very hard |
| Lithiumhighest measured · range ND to 40.7 · 2025 report, page 3 | 40.7 ppb | None set | None | No health limit |
| Magnesiumhighest measured · range 28.8 to 33 · sampled 2023 · 2025 report, page 3 | 33 ppm | None set | None | No health limit |
| Potassiumhighest measured · range 1.94 to 7.24 · sampled 2023 · 2025 report, page 3 | 7.24 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 2.13 to 81.4 · sampled 2023 · 2025 report, page 3 | 81.4 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. 4 numbers we weren’t sure about are held back until a person checks.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Pevely Pws’s water between May 2025 and Nov 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium44.1 ppbFound in 4 of 8 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.
Salty taste / high TDS
Found: Total dissolved solids
What removes it: Reverse osmosis.
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