Tap Water Quality Report
Tap water quality in LEHI, Utah
Tap water in LEHI, Utah receives a grade of D (62/100) from TapWaterSafety.org. It's served by LEHI CITY. The most significant water quality concerns are: Arsenic significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in LEHI's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving LEHI.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 1.94 ppb, 484x above the EWG health guideline of 0.004 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 4.1 ppb, 41x above the EWG health guideline of 0.1 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 5.68 ppb, 38x above the EWG health guideline of 0.15 ppb.
Recommended filters for LEHI
Filters matched to the specific contaminants in LEHI's water supply.
Reverse Osmosis
$249-$750Arsenic is most effectively removed by reverse osmosis. Some specialized adsorptive filters also work.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in LEHI's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Arsenic Heavy metal |
1.94 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 484× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
4.1 ppb | 0.1 | 60.0 | 60 | — | — | — | 41× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
5.68 ppb | 0.15 | 80.0 | 100 | — | — | — | 38× over |
| Chromium (hexavalent) Heavy metal |
0.571 ppb | 0.02 | — | — | — | — | — | 29× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
1.53 ppb | 0.06 | — | — | — | — | — | 26× over |
| Bromodichloromethane Disinfection byproduct |
1.23 ppb | 0.06 | — | — | — | — | — | 21× over |
| Trichloroacetic acid Disinfection byproduct |
1.99 ppb | 0.1 | — | — | — | — | — | 20× over |
| Dichloroacetic acid Disinfection byproduct |
1.96 ppb | 0.2 | — | — | — | — | — | 9.8× over |
| Chloroform Disinfection byproduct |
3.03 ppb | 0.4 | — | — | — | — | — | 7.6× over |
| Radium, combined (-226 and -228) Radiological |
0.34 pCi/L | 0.05 | 5.0 | — | — | — | — | 6.8× over |
| Nitrate Inorganic |
0.846 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 6.0× over |
| Dibromochloromethane Disinfection byproduct |
0.555 ppb | 0.1 | — | — | — | — | — | 5.5× over |
| Nitrate and nitrite* Inorganic |
0.133 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Barium Heavy metal |
114.9 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Vanadium Other |
1.75 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Bromoform Disinfection byproduct |
0.039 ppb | 0.5 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
2.2 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Aluminum Heavy metal |
30.0 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Selenium Heavy metal |
0.843 ppb | 30.0 | 50.0 | 20 | 40 | 30 | — | Below guideline |
| Manganese Heavy metal |
1.43 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Strontium Radiological |
0.38 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS)* PFAS |
0.091 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Perfluoroheptanoic acid (PFHPA)* PFAS |
0.033 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Bromide* Other |
19.5 ppb | — | — | — | — | — | — | Below guideline |
| Cyanide* Inorganic |
1.9 ppb | — | 200.0 | 50 | 70 | 150 | — | Below guideline |
| Fluoride Inorganic |
0.409 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| o-toluidine Other |
0.00117 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from LEHI CITY.