We read 19 results from Seneca Pws’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 2,390 people · Water system ID MO5010733 · 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 |
|---|---|---|---|---|
| Ironhighest measured · range 0.1 to 1.83 · 2025 report, page 2 | 1.83 ppm | — | 0.3 ppm guideline | Above the guideline6.1x the guideline (taste, odor or stains; not a health limit) |
| Lead90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 2.07 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal10x the health goal |
| Bariumhighest measured · range 0.0073 to 0.01 · 2025 report, page 2 | 0.01 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range ND to 8.29 · 2025 report, page 2 | 8.29 ppm | — | 250 ppm guideline | Within the guideline |
| Chromium (total)highest measured · range ND to 1.73 · 2025 report, page 2 | 1.73 ppb | None set | 100 ppb | Below the legal limit |
| Copper90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 0.02 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Fluoridehighest measured · range 0.16 to 0.33 · 2025 report, page 2 | 0.33 ppm | 1 ppm | 4 ppm | Below the health goal |
| Manganesehighest measured · range 0.0022 to 0.02 · 2025 report, page 2 | 0.02 ppm | — | 0.05 ppm guideline | Within the guideline |
| pHhighest measured · range 7.88 to 8.17 · 2025 report, page 2 | 8.17 | — | — | Normal range |
| Sulfatehighest measured · range 15 to 18 · 2025 report, page 2 | 18 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 160 to 204 · 2025 report, page 2 | 204 ppm | — | 500 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.02 to 0.03 · 2025 report, page 2 | 0.03 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 174 to 342 · 2025 report, page 2 | 342 ppm | None set | None | No health limit |
| Calciumhighest measured · range 24.8 to 34.2 · 2025 report, page 2 | 34.2 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 6.26 to 8.71 · 2025 report, page 2 | 8.71 gpg (149 ppm) | — | — | Hard |
| Magnesiumhighest measured · range 11.1 to 15.5 · 2025 report, page 2 | 15.5 ppm | None set | None | No health limit |
| Nickelhighest measured · range ND to 1.86 · printed as 0.00186 MG/L · 2025 report, page 2 | 1.86 ppb | None set | None | No health limit |
| Potassiumhighest measured · range 1.41 to 1.74 · 2025 report, page 2 | 1.74 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 5.3 to 10.6 · 2025 report, page 2 | 10.6 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