We read 25 results from Lincoln County Pwsd 1’s 2025 water quality report. No results over a legal limit; 7 above a health goal or guideline.
Serves about 14,000 people · Water system ID MO6024340 · 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 |
|---|---|---|---|---|
| Fluoridehighest measured · range 1.8 to 2.59 · 2025 report, page 2 | 2.59 ppm | 1 ppm | 4 ppm | Above the 2 ppm secondary standard1.3x the 2 ppm secondary standard (EPA's level to prevent tooth discoloration, also used as health guidance); below the 4 ppm legal limit |
| Gross alpha (radioactivity)highest measured · range 6.6 to 13.7 · highest of 2 sources · 2025 report, page 2 | 13.7 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Lead90th percentile of homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 2 | 3.51 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal18x the health goal |
| Radium (combined 226 + 228)highest measured · range 2.2 to 4.2 · 2025 report, page 2 | 4.2 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Radium-226highest measured · range 2.2 to 2.8 · 2025 report, page 2 | 2.8 pCi/L | 0.05 pCi/L | 5 pCi/L | Above the health goal56x the health goal |
| Radium-228highest measured · range ND to 1.4 · 2025 report, page 2 | 1.4 pCi/L | 0.02 pCi/L | 5 pCi/L | Above the health goal74x the health goal |
| Total dissolved solidshighest measured · range 504 to 672 · 2025 report, page 3 | 672 ppm | — | 500 ppm guideline | Above the guideline1.3x the guideline (taste, odor or stains; not a health limit) |
| Bariumhighest measured · range 0.02 to 0.03 · 2025 report, page 2 | 0.03 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chloridehighest measured · range 65 to 114 · 2025 report, page 3 | 114 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 | 0.18 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (TTHM)highest running annual average · range 4.4 to 4.4 · DBPDUAL-01, highest of 2 sources · 2025 report, page 2 | 4 ppb | None set | 80 ppb | Below the legal limit |
| Ironhighest measured · range ND to 0.11 · 2025 report, page 3 | 0.11 ppm | — | 0.3 ppm guideline | Within the guideline |
| Manganesehighest measured · range ND to 0.0047 · 2025 report, page 3 | 0.0047 ppm | — | 0.05 ppm guideline | Within the guideline |
| Nitrate (as N)highest measured · range ND to 0.02 · 2025 report, page 2 | 0.02 ppm | 10 ppm | 10 ppm | Below the health goal |
| pHhighest measured · range 7.42 to 8.12 · 2025 report, page 3 | 8.12 | — | — | Normal range |
| Sulfatehighest measured · range 76.9 to 114 · 2025 report, page 3 | 114 ppm | — | 250 ppm guideline | Within the guideline |
| Zinchighest measured · range 0.0097 to 0.09 · 2025 report, page 3 | 0.09 ppm | — | 5 ppm guideline | Within the guideline |
| Alkalinityhighest measured · range 313 to 480 · 2025 report, page 3 | 480 ppm | None set | None | No health limit |
| Calciumhighest measured · range 55.7 to 69.4 · 2025 report, page 3 | 69.4 ppm | None set | None | No health limit |
| Hardnesshighest measured · range 13.8 to 18.3 · 2025 report, page 3 | 18.3 gpg (313 ppm) | — | — | Very hard |
| Lithiumhighest measured · range 71.5 to 132 · sampled 2024 · highest of 2 sources · 2025 report, page 3 | 132 ppb | None set | None | No health limit |
| Magnesiumhighest measured · range 23.6 to 33.9 · 2025 report, page 3 | 33.9 ppm | None set | None | No health limit |
| Nickelhighest measured · range 1.62 to 1.95 · printed as 0.00195 MG/L · 2025 report, page 3 | 1.95 ppb | None set | None | No health limit |
| Potassiumhighest measured · range 8.57 to 11.5 · 2025 report, page 3 | 11.5 ppm | None set | None | No health limit |
| Sodiumhighest measured · range 81.3 to 146 · 2025 report, page 3 | 146 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 Lincoln County Pwsd 1’s water between Jul 2024 and Dec 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium132 ppbFound in 10 of 10 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.
Fluoride
Found: Fluoride
What removes it: Reverse osmosis.
Radium and uranium
Found: Gross alpha (radioactivity), Radium (combined 226 + 228), Radium-226, Radium-228
What removes it: Reverse osmosis.
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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