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Tap water quality report

Lehi, UT

EPA monitoring detected 24 contaminants across the 2 water suppliers serving Lehi. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
132,491
people served
24
contaminants found
Utah rankings Lead in Utah PFAS in Utah

What was found in Lehi's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
1700 µg/L 17%
of the EPA limit 10000 µg/L
Main supplier: LEHI CITY · 93,446 people · 2019
2/2 SYR4
Nitrate-Nitrite
1600 µg/L 16%
of the EPA limit 10000 µg/L
Main supplier: LEHI CITY · 93,446 people · 2016
2/2 SYR4
Fluoride
850 µg/L 21%
of the EPA limit 4000 µg/L
Main supplier: LEHI CITY · 93,446 people · 2019
2/2 SYR4
Barium
237.8 µg/L 12%
of the EPA limit 2000 µg/L
Main supplier: LEHI CITY · 93,446 people · 2019
2/2 SYR4
Copper
209.29 µg/L 16%
of the EPA limit 1300 µg/L
Main supplier: LEHI CITY · 93,446 people · 2018
2/2 SYR4
TTHM
41.975 µg/L 52%
of the EPA limit 80 µg/L
Main supplier: LEHI CITY · 93,446 people · 2019
1/2 SYR4
Chloroform
36.065 µg/L
No EPA limit set
Main supplier: LEHI CITY · 93,446 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
33.14 µg/L 55%
of the EPA limit 60 µg/L
Main supplier: LEHI CITY · 93,446 people · 2019
1/2 SYR4
Lithium
21.4 µg/L
No EPA limit set
Main supplier: LEHI CITY · 93,446 people · 2025
2/2 UCMR-5
Trichloroacetic Acid
17.21 µg/L
No EPA limit set
Main supplier: LEHI CITY · 93,446 people · 2019
1/2 SYR4
Dichloroacetic Acid
16.3 µg/L
No EPA limit set
Main supplier: LEHI CITY · 93,446 people · 2019
1/2 SYR4
Bromodichloromethane
11.35 µg/L
No EPA limit set
Main supplier: LEHI CITY · 93,446 people · 2019
1/2 SYR4
Arsenic
8.6 µg/L 86%
of the EPA limit 10 µg/L
Main supplier: LEHI CITY · 93,446 people · 2019
2/2 SYR4
Selenium
8.335 µg/L 17%
of the EPA limit 50 µg/L
Main supplier: LEHI CITY · 93,446 people · 2019
2/2 SYR4
Gross Beta Particle Activity
6.635 pCi/L
No EPA limit set
Main supplier: LEHI CITY · 93,446 people · 2019
2/2 SYR4
Gross Alpha, Excl. Radon And U
5.22 pCi/L 35%
of the EPA limit 15 pCi/L
Main supplier: LEHI CITY · 93,446 people · 2019
Highest in the city: 5.295 pCi/L — AMERICAN FORK CITY · 39,045 people · 2019
2/2 SYR4
Thallium, Total
4.92 µg/L 246%
of the EPA limit, at the 95th percentile of samples — 2 µg/L
Main supplier: LEHI CITY · 93,446 people · 2019
1/2 SYR4
Lead
3.56 µg/L 24%
of the EPA limit 15 µg/L
Main supplier: LEHI CITY · 93,446 people · 2018
2/2 SYR4
Dibromochloromethane
2.63 µg/L
No EPA limit set
Main supplier: LEHI CITY · 93,446 people · 2019
1/2 SYR4
Bromoform
1.88 µg/L
No EPA limit set
Main supplier: LEHI CITY · 93,446 people · 2019
1/2 SYR4
Dibromoacetic Acid
1.575 µg/L
No EPA limit set
Main supplier: LEHI CITY · 93,446 people · 2019
1/2 SYR4
Combined Radium (-226 And -228)
0.6590 pCi/L 13%
of the EPA limit 5 pCi/L
Main supplier: LEHI CITY · 93,446 people · 2016
Highest in the city: 1.3 pCi/L — AMERICAN FORK CITY · 39,045 people · 2013
2/2 SYR4
Mercury
0.2000 µg/L 10%
of the EPA limit 2 µg/L
Main supplier: LEHI CITY · 93,446 people · 2019
1/2 SYR4
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
Main supplier: LEHI CITY · 93,446 people · 2024
Highest in the city: 0.0037 mg/L — AMERICAN FORK CITY · 39,045 people · 2025
2/2 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Lehi

SupplierPopulation served
LEHI CITY 93,446
AMERICAN FORK CITY 39,045

Frequently asked questions about Lehi tap water

Is Lehi tap water safe to drink?

EPA testing detected 24 contaminants in the water serving Lehi. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Lehi?

2 public water suppliers report drinking-water monitoring for Lehi, Utah to the EPA. Each is listed above with its population served.

What contaminants are in Lehi's water?

The contaminants EPA monitoring detected in Lehi include Nitrate, Nitrate-Nitrite, Fluoride, Barium, Copper. The full list, with the level at the main supplier and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.