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Tap water quality report

Salt Lake City, UT

EPA monitoring detected 40 contaminants across the 7 water suppliers serving Salt Lake City. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

7
water suppliers
528,753
people served
40
contaminants found
Utah rankings Lead in Utah PFAS in Utah

What was found in Salt Lake City's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
6400 µg/L 64%
of the EPA limit 10000 µg/L
 6/7 SYR4
Nitrate-Nitrite
5500 µg/L 55%
of the EPA limit 10000 µg/L
 5/7 SYR4
Copper
2700 µg/L 208%
of the EPA limit, in the worst sample — 1300 µg/L
 7/7 SYR4
Fluoride
2100 µg/L 53%
of the EPA limit 4000 µg/L
 5/7 SYR4
Barium
147 µg/L 7.4%
of the EPA limit 2000 µg/L
 6/7 SYR4
Nitrite
100 µg/L 10%
of the EPA limit 1000 µg/L
 1/7 SYR4
TTHM
92.4 µg/L 116%
of the EPA limit, in the worst sample — 80 µg/L
 6/7 SYR4
Chloroform
73.8 µg/L
No EPA limit set
 6/7 SYR4
Total Haloacetic Acids (HAA5)
71.6 µg/L 119%
of the EPA limit, in the worst sample — 60 µg/L
 6/7 SYR4
Lithium
42.8 µg/L
No EPA limit set
 4/7 UCMR-5
Trichloroacetic Acid
33.3 µg/L
No EPA limit set
 6/7 SYR4
Lead
31.5 µg/L 210%
of the EPA limit, in the worst sample — 15 µg/L
 7/7 SYR4
Dichloroacetic Acid
30.23 µg/L
No EPA limit set
 6/7 SYR4
Thallium, Total
30 µg/L 1500%
of the EPA limit, in the worst sample — 2 µg/L
 1/7 SYR4
Arsenic
23.4 µg/L 234%
of the EPA limit, in the worst sample — 10 µg/L
 6/7 SYR4
Bromodichloromethane
18.2 µg/L
No EPA limit set
 6/7 SYR4
Di(2-ethylhexyl) Phthalate
15.3 µg/L 255%
of the EPA limit, in the worst sample — 6 µg/L
 1/7 SYR4
Combined Uranium
15.2 µg/L 51%
of the EPA limit 30 µg/L
 1/7 SYR4
Antimony, Total
13.3 µg/L 222%
of the EPA limit, in the worst sample — 6 µg/L
 2/7 SYR4
Dibromochloromethane
12.1 µg/L
No EPA limit set
 6/7 SYR4
Cyanide
11.9 µg/L 6%
of the EPA limit 200 µg/L
 4/7 SYR4
Bromoform
8.01 µg/L
No EPA limit set
 3/7 SYR4
Gross Beta Particle Activity
7.4 pCi/L
No EPA limit set
 6/7 SYR4
Chromium
7 µg/L 7%
of the EPA limit 100 µg/L
 1/7 SYR4
Tetrachloroethylene
7 µg/L 140%
of the EPA limit, in the worst sample — 5 µg/L
 1/7 SYR4
Selenium
6.6 µg/L 13%
of the EPA limit 50 µg/L
 6/7 SYR4
Gross Alpha, Excl. Radon And U
4.7 pCi/L 31%
of the EPA limit 15 pCi/L
 5/7 SYR4
Cadmium
4.3 µg/L 86%
of the EPA limit 5 µg/L
 2/7 SYR4
Toluene
4.2 µg/L 0.4%
of the EPA limit 1000 µg/L
 1/7 SYR4
Dibromoacetic Acid
3.8 µg/L
No EPA limit set
 3/7 SYR4
Combined Radium (-226 And -228)
2.8 pCi/L 56%
of the EPA limit 5 pCi/L
 3/7 SYR4
Monochloroacetic Acid
2.68 µg/L
No EPA limit set
 1/7 SYR4
Beryllium, Total
1 µg/L 25%
of the EPA limit 4 µg/L
 1/7 SYR4
Mercury
0.4000 µg/L 20%
of the EPA limit 2 µg/L
 2/7 SYR4
Asbestos
0.1600 MFL 2.3%
of the EPA limit 7 MFL
 1/7 SYR4
PFHXS
0.0182 µg/L
No EPA limit set
 1/7 UCMR-5
Lead
0.0112 mg/L 75%
of the EPA limit 0.0150 mg/L
 7/7 LCR
PFOS
0.0071 µg/L
No EPA limit set
 1/7 UCMR-5
Pfpea
0.0062 µg/L
No EPA limit set
 1/7 UCMR-5
Pfhxa
0.0057 µg/L
No EPA limit set
 1/7 UCMR-5
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 single worst sample on record — 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 Salt Lake City

SupplierPopulation served
SALT LAKE CITY WATER SYSTEM 383,612
GRANGER-HUNTER IMPROVEMENT DISTRICT 121,083
HOLLIDAY WATER COMPANY 15,000
SL COUNTY SERVICE AREA NO 3 - SNOWBIRD 5,110
VA MEDICAL CENTER SLC 2,798
EMIGRATION IMPROVEMENT DISTRICT 1,000
BOUNDARY SPRING WATER CO 150

Frequently asked questions about Salt Lake City tap water

Is Salt Lake City tap water safe to drink?

EPA testing detected 40 contaminants in the water serving Salt Lake City. 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 Salt Lake City?

7 public water suppliers report drinking-water monitoring for Salt Lake City, Utah to the EPA. Each is listed above with its population served.

What contaminants are in Salt Lake City's water?

The contaminants EPA monitoring detected in Salt Lake City include Nitrate, Nitrate-Nitrite, Copper, Fluoride, Barium. The full list, with the highest level found 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.