We read 8 results from Clay Co Reg Water District’s 2025 water quality report. No results over a legal limit; 2 above a health goal or guideline.
Serves about 5,633 people · Water system ID AR0000722 · 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 20 homes tested, 0 over the action level · printed as 0.001 ppm · Customer taps · 2025 report, page 2 | 1 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal5x the health goal |
| Radium (combined 226 + 228)highest running annual average · range 0.72 to 1.69 · 2025 report, page 2 | 1.69 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Chlorinehighest running annual average · range ND to 0.5 · 2025 report, page 2 | 0.42 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 20 homes tested, 0 over the action level · Customer taps · 2025 report, page 2 | 0.16 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest measured · 2025 report, page 2 | Not detected | None set | 60 ppb | Not detected |
| Disinfection byproducts (TTHM)highest measured · 2025 report, page 2 | Not detected | None set | 80 ppb | Not detected |
| Fluoridehighest running annual average · range 0.42 to 1.27 · 2025 report, page 2 | 0.86 ppm | 1 ppm | 4 ppm | Below the health goal |
| Lithiumaverage · range 59 to 67 · printed as 0.063 ppm · 2025 report, page 2 | 63 ppb | 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 Clay Co Reg Water District’s water between May 2024 and Nov 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium73.6 ppbFound in 6 of 6 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.
Radium and uranium
Found: Radium (combined 226 + 228)
What removes it: Reverse osmosis.
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