We read 11 results from Hooper Water Improvement District’s 2025 water quality report. No results over a legal limit; 4 above a health goal or guideline.
Serves about 20,820 people · Water system ID UTAH29006 · 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 |
|---|---|---|---|---|
| Arsenichighest measured · range 1.4 to 7 · Wells · 2025 report, page 3 | 7 ppb | 0.004 ppb | 10 ppb | Above the health goal1,750x the health goal |
| Gross alpha (radioactivity)highest measured · range 0.25 to 1.99 · Wells · 2025 report, page 4 | 1.99 pCi/L | 0 pCi/L | 15 pCi/L | Above the health goalThe health goal is zero |
| Radium (combined 226 + 228)as reported · Wells · 2025 report, page 4 | 1.5 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Radium-228highest measured · range ND to 0.97 · Wells · 2025 report, page 4 | 0.97 pCi/L | 0.02 pCi/L | 5 pCi/L | Above the health goal51x the health goal |
| Disinfection byproducts (HAA5)highest measured · range ND to 9.25 · Distribution system · 2025 report, page 4 | 9.25 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest measured · range ND to 18.9 · Distribution system · 2025 report, page 4 | 18.9 ppb | None set | 80 ppb | Below the legal limit |
| Nitrate (as N)highest measured · range ND to 0.7 · Wells · 2025 report, page 4 | 0.7 ppm | 10 ppm | 10 ppm | Below the health goal |
| Sulfatehighest measured · range 2.89 to 9.07 · Wells · 2025 report, page 4 | 9.07 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 216 to 232 · Wells · 2025 report, page 4 | 232 ppm | — | 500 ppm guideline | Within the guideline |
| Turbidity (cloudiness)highest measured · range 0.25 to 0.32 · Wells · 2025 report, page 3 | 0.32 NTU | None set | 1 NTU | Below the legal limit |
| Sodiumhighest measured · range 20 to 31.4 · Wells · 2025 report, page 4 | 31.4 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. 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 Hooper Water Improvement District’s water between Dec 2023 and Mar 2024. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium19.5 ppbFound in 4 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.
Radium and uranium
Found: Gross alpha (radioactivity), Radium (combined 226 + 228), Radium-228
What removes it: Reverse osmosis.
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