We read 9 results from Wall’s 2025 water quality report. No results over a legal limit; 3 above a health goal or guideline.
Serves about 699 people · Water system ID SD4600417 · Read the district’s 2025 report (opens in a new tab)
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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 2.09 to 3.15 · highest of 2 sources · 2025 report, page 4 | 3.15 ppm | 1 ppm | 4 ppm | Above the 2 ppm secondary standard1.6x the 2 ppm secondary standard (EPA's level to prevent tooth discoloration, also used as health guidance); below the 4 ppm legal limit |
| Lead90th percentile of homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 4 | 1 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal5x the health goal |
| Radium (combined 226 + 228)highest measured · range ND to 1 · sampled 2021 · 2025 report, page 4 | 1 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Antimonyhighest measured · range ND to 1 · WR/LJ - Creighton Project · 2025 report, page 4 | 1 ppb | 1 ppb | 6 ppb | Below the health goal |
| Bariumhighest measured · range 0.02 to 0.03 · sampled 2022 · WR/LJ - Creighton Project, highest of 2 sources · 2025 report, page 4 | 0.03 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chromium (total)highest measured · range ND to 1.9 · sampled 2022 · WR/LJ - Creighton Project · 2025 report, page 4 | 1.9 ppb | None set | 100 ppb | Below the legal limit |
| Copper90th percentile of homes tested, 0 over the action level · sampled 2024 · Customer taps · 2025 report, page 4 | 0.1 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Seleniumhighest measured · range ND to 3 · WR/LJ - Creighton Project · 2025 report, page 4 | 3 ppb | 30 ppb | 50 ppb | Below the health goal |
| Lithiumhighest measured · range 58.6 to 238 · sampled 2023 · 2025 report, page 6 | 238 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. 1 number we weren’t sure about is held back until a person checks.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Wall’s water between Apr 2023 and Nov 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium238 ppbFound in 9 of 9 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.
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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