We read 17 results from Lehi City’s 2025 water quality report. 1 result over a legal limit and 4 above a health goal or guideline.
Serves about 79,978 people · Water system ID UTAH25015 · 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 |
|---|---|---|---|---|
| Turbidity (cloudiness)highest measured · listed as a violation in the report · Groundwater wells, highest of 2 sources · 2025 report, page 5 | 4.2 NTU | None set | 1 NTU | Over the legal limit4.2x the legal limit |
| Arsenichighest measured · range 1.8 to 3 · listed as a violation in the report · Lehi sources · 2025 report, page 6 | 3 ppb | 0.004 ppb | 10 ppb | Above the health goal750x the health goal |
| Gross alpha (radioactivity)highest measured · range 0.44 to 9.85 · listed as a violation in the report · Lehi sources · 2025 report, page 7 | 9.85 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 · listed as a violation in the report · sampled 2024 · Customer taps · 2025 report, page 6 | 3 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal15x the health goal |
| Radium (combined 226 + 228)highest measured · range ND to 4.7 · listed as a violation in the report · Lehi sources · 2025 report, page 7 | 4.7 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Antimonyhighest measured · range ND to 0.7 · listed as a violation in the report · Lehi sources · 2025 report, page 6 | 0.7 ppb | 1 ppb | 6 ppb | Below the health goal |
| Bariumhighest measured · range 0.06 to 0.24 · listed as a violation in the report · printed as 238 ppb · Lehi sources · 2025 report, page 6 | 0.24 ppm | 2 ppm | 2 ppm | Below the health goal |
| Chlorinehighest measured · range 0.2 to 0.8 · listed as a violation in the report · Distribution system · 2025 report, page 7 | 0.8 ppm | None set | 4 ppm | Below the legal limit |
| Cyanidehighest measured · range ND to 6 · listed as a violation in the report · Lehi sources · 2025 report, page 6 | 6 ppb | 150 ppb | 200 ppb | Below the health goal |
| Disinfection byproducts (HAA5)highest measured · range ND to 22 · listed as a violation in the report · Distribution system · 2025 report, page 7 | 22 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest measured · range ND to 25 · listed as a violation in the report · Distribution system · 2025 report, page 7 | 25 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.01 to 0.28 · listed as a violation in the report · printed as 282 ppb · Lehi sources · 2025 report, page 6 | 0.28 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)highest measured · listed as a violation in the report · Lehi sources · 2025 report, page 6 | 2 ppm | 10 ppm | 10 ppm | Below the health goal |
| Seleniumhighest measured · range ND to 7 · listed as a violation in the report · Lehi sources · 2025 report, page 6 | 7 ppb | 30 ppb | 50 ppb | Below the health goal |
| Sulfatehighest measured · range 4 to 40 · listed as a violation in the report · Lehi sources · 2025 report, page 6 | 40 ppm | — | 250 ppm guideline | Within the guideline |
| Total dissolved solidshighest measured · range 120 to 388 · listed as a violation in the report · Lehi sources · 2025 report, page 6 | 388 ppm | — | 500 ppm guideline | Within the guideline |
| Sodiumhighest measured · range 5 to 45 · listed as a violation in the report · Lehi sources · 2025 report, page 6 | 45 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 Lehi City’s water between Jan 2025 and Oct 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- Lithium21.4 ppbFound in 8 of 16 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.
Sediment or cloudy water
Found: Turbidity (cloudiness)
What removes it: Sediment filter.
Radium and uranium
Found: Gross alpha (radioactivity), Radium (combined 226 + 228)
What removes it: Reverse osmosis.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
More districts: Utah water quality · All states · Something look wrong? Tell us