We read 11 results from Mo American Joplin’s 2025 water quality report. No results over a legal limit; 5 above a health goal or guideline.
Serves about 73,728 people · Water system ID MO5010413 · 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 |
|---|---|---|---|---|
| Gross alpha (radioactivity)highest measured · range ND to 4.4 · sampled 2024 · 2025 report, page 2 | 4.4 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Lead90th percentile of homes tested, 1 over the action level · Customer taps · 2025 report, page 2 | 4 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal20x the health goal |
| Radium (combined 226 + 228)highest measured · range 2.2 to 2.2 · sampled 2023 · 2025 report, page 2 | 2.2 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Radium-226highest measured · range 2.2 to 2.2 · sampled 2023 · 2025 report, page 2 | 2.2 pCi/L | 0.05 pCi/L | 5 pCi/L | Above the health goal44x the health goal |
| Radium-228highest measured · range ND to 1.1 · sampled 2024 · 2025 report, page 2 | 1.1 pCi/L | 0.02 pCi/L | 5 pCi/L | Above the health goal58x the health goal |
| Bariumhighest measured · range ND to 0.2 · 2025 report, page 2 | 0.2 ppm | 2 ppm | 2 ppm | Below the health goal |
| Copper90th percentile of homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 0.03 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 10.5 to 22.1 · DBPDUAL-04, highest of 4 sources · 2025 report, page 2 | 29 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 18 to 26.8 · DBPDUAL-02, highest of 4 sources · 2025 report, page 2 | 30 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range ND to 0.75 · 2025 report, page 2 | 0.75 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)highest measured · range ND to 2.25 · 2025 report, page 2 | 2.25 ppm | 10 ppm | 10 ppm | Below the health goal |
Utility results describe the whole system, measured where water enters the pipes, not your tap. Your home’s plumbing can add lead or copper. 12 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 Mo American Joplin’s water between Mar 2024 and Dec 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium27.1 ppbFound in 10 of 18 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.
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.
More districts: Missouri water quality · All states · Something look wrong? Tell us