We read 19 results from Maryville Pws’s 2025 water quality report. No results over a legal limit; 1 above a health goal or guideline.
Serves about 10,775 people · Water system ID MO1010508 · Read the district’s 2025 report (opens in a new tab)
Open this district in the water lookupCompare with your own test results, see the district map and get matched filters.
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, 1 over the action level · sampled 2024 · Customer taps · 2025 report, page 2 | 6.05 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal30x the health goal |
| Aluminumhighest measured · range 0.12 to 0.12 · 2025 report, page 3 | 0.12 ppm | — | 0.2 ppm guideline | Within the guideline |
| Bariumhighest measured · range 0.11 to 0.11 · 2025 report, page 2 | 0.11 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 20.5 to 20.5 · 2025 report, page 3 | 20.5 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 | 0.29 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 7.96 to 24 · DBPDUAL-04, highest of 4 sources · 2025 report, page 2 | 20 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 14.4 to 48.6 · DBPDUAL-01, highest of 4 sources · 2025 report, page 2 | 29 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.3 to 0.3 · 2025 report, page 2 | 0.3 ppm | 1 ppm | 4 ppm | Below the health goal |
| Manganesehighest measured · range 0.0013 to 0.0013 · 2025 report, page 3 | 0.0013 ppm | — | 0.05 ppm guideline | Within the guideline |
| Nitrate (as N)highest measured · range 0.07 to 0.07 · 2025 report, page 2 | 0.07 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 8.27 to 8.27 · 2025 report, page 3 | 8.27 | — | — | Normal range |
| Total dissolved solidshighest measured · range 196 to 196 · 2025 report, page 3 | 196 ppm | — | 500 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 146 to 146 · highest of 2 sources · 2025 report, page 3 | 146 ppm | None set | None | No health limit |
| Calciumhighest measured · range 40 to 40 · 2025 report, page 3 | 40 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 8.13 to 8.13 · 2025 report, page 3 | 8.13 gpg (139 ppm) | — | — | Hard |
| Magnesiumhighest measured · range 9.52 to 9.52 · 2025 report, page 3 | 9.52 ppm | None set | None | No health limit |
| Nickelhighest measured · range 2.16 to 2.16 · printed as 0.00216 MG/L · 2025 report, page 3 | 2.16 ppb | None set | None | No health limit |
| Potassiumhighest measured · range 5.22 to 5.22 · 2025 report, page 3 | 5.22 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 16.2 to 16.2 · 2025 report, page 3 | 16.2 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.
More districts: Missouri water quality · All states · Something look wrong? Tell us