Water Quality Report · Updated October 07, 2026
LEHI CITY
LEHI CITY delivers tap water graded C (67/100) by TapWaterSafety.org. The utility serves approximately 93,446 residents in LEHI, Utah using surface water (purchased). 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. For questions, the utility can be reached at 385-201-1700.
Is LEHI tap water safe to drink?
LEHI CITY delivers tap water that earns a grade of C (67/100) from TapWaterSafety.org — an average rating, with several contaminants above health guidelines but generally compliant with US legal limits.
The utility serves 93,446 residents in LEHI, drawing from surface water (purchased).
Public testing data identifies 12 contaminants in this water above EWG's health-based guidelines, including: Arsenic, Haloacetic acids (HAA5), Total trihalomethanes (TTHMs), Chromium (hexavalent), Haloacetic acids (HAA9), Bromodichloromethane, Trichloroacetic acid, Dichloroacetic acid, Chloroform, Radium, combined (-226 and -228), Nitrate, Dibromochloromethane. For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
EPA compliance record
Official U.S. EPA records for LEHI CITY (system ID UTAH25015) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Nitrate Rule | Missed testing or reporting | 01/01/2025 | Open |
| Synthetic Organic Chemicals | Missed testing or reporting | 01/01/2023 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Quick actions for LEHI residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for LEHI CITY.
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.
Contact LEHI CITY
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for LEHI
Filters matched to the specific contaminants in this water supply.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 67/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
LEHI CITY service area
This water system serves 1 community in Utah County, Utah. Click any city for its dedicated tap water quality page.
Find the right filter for LEHI water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.