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Tap water quality report

Mapleton, UT

EPA monitoring detected 23 contaminants across the 2 water suppliers serving Mapleton. 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
14,000
people served
23
contaminants found
Utah rankings Lead in Utah PFAS in Utah

What was found in Mapleton'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
4440 µg/L 44%
of the EPA limit 10000 µg/L
Main supplier: MAPLETON CITY · 14,000 people · 2019
2/2 SYR4
Nitrate-Nitrite
4024 µg/L 40%
of the EPA limit 10000 µg/L
Main supplier: MAPLETON CITY · 14,000 people · 2019
2/2 SYR4
Fluoride
290.72 µg/L 7.3%
of the EPA limit 4000 µg/L
Main supplier: MAPLETON CITY · 14,000 people · 2019
Highest in the city: 400 µg/L — CENTRAL UTAH WCD - UTAH VALLEY · 0 people · 2019
2/2 SYR4
Copper
229.95 µg/L 18%
of the EPA limit 1300 µg/L
Main supplier: MAPLETON CITY · 14,000 people · 2018
2/2 SYR4
Barium
102.8 µg/L 5.1%
of the EPA limit 2000 µg/L
Main supplier: MAPLETON CITY · 14,000 people · 2019
Highest in the city: 168.2 µg/L — CENTRAL UTAH WCD - UTAH VALLEY · 0 people · 2019
2/2 SYR4
TTHM
56.445 µg/L 71%
of the EPA limit 80 µg/L
Highest in the city: CENTRAL UTAH WCD - UTAH VALLEY · 0 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
35.76 µg/L 60%
of the EPA limit 60 µg/L
Highest in the city: CENTRAL UTAH WCD - UTAH VALLEY · 0 people · 2019
1/2 SYR4
Chloroform
18.06 µg/L
No EPA limit set
Highest in the city: CENTRAL UTAH WCD - UTAH VALLEY · 0 people · 2019
1/2 SYR4
Dichloroacetic Acid
12.555 µg/L
No EPA limit set
Highest in the city: CENTRAL UTAH WCD - UTAH VALLEY · 0 people · 2017
1/2 SYR4
Trichloroacetic Acid
11.42 µg/L
No EPA limit set
Highest in the city: CENTRAL UTAH WCD - UTAH VALLEY · 0 people · 2017
1/2 SYR4
Gross Beta Particle Activity
8.965 pCi/L
No EPA limit set
Main supplier: MAPLETON CITY · 14,000 people · 2019
2/2 SYR4
Arsenic
1.17 µg/L 12%
of the EPA limit 10 µg/L
Main supplier: MAPLETON CITY · 14,000 people · 2019
Highest in the city: 7.605 µg/L — CENTRAL UTAH WCD - UTAH VALLEY · 0 people · 2019
2/2 SYR4
Lead
7.4 µg/L 49%
of the EPA limit 15 µg/L
Main supplier: MAPLETON CITY · 14,000 people · 2018
2/2 SYR4
Bromodichloromethane
6.74 µg/L
No EPA limit set
Highest in the city: CENTRAL UTAH WCD - UTAH VALLEY · 0 people · 2019
1/2 SYR4
Gross Alpha, Excl. Radon And U
5.925 pCi/L 39%
of the EPA limit 15 pCi/L
Main supplier: MAPLETON CITY · 14,000 people · 2019
2/2 SYR4
Selenium
4.1 µg/L 8.2%
of the EPA limit 50 µg/L
Main supplier: MAPLETON CITY · 14,000 people · 2019
2/2 SYR4
Dibromochloromethane
2.46 µg/L
No EPA limit set
Highest in the city: CENTRAL UTAH WCD - UTAH VALLEY · 0 people · 2019
1/2 SYR4
Cyanide
2 µg/L 1%
of the EPA limit 200 µg/L
Main supplier: MAPLETON CITY · 14,000 people · 2019
2/2 SYR4
Combined Radium (-226 And -228)
1.655 pCi/L 33%
of the EPA limit 5 pCi/L
Main supplier: MAPLETON CITY · 14,000 people · 2016
1/2 SYR4
Dibromoacetic Acid
1 µg/L
No EPA limit set
Highest in the city: CENTRAL UTAH WCD - UTAH VALLEY · 0 people · 2017
1/2 SYR4
Cadmium
0.2000 µg/L 4%
of the EPA limit 5 µg/L
Main supplier: MAPLETON CITY · 14,000 people · 2019
1/2 SYR4
Antimony, Total
0.0500 µg/L 0.8%
of the EPA limit 6 µg/L
Highest in the city: CENTRAL UTAH WCD - UTAH VALLEY · 0 people · 2019
1/2 SYR4
Lead
0.0024 mg/L 16%
of the EPA limit 0.0150 mg/L
Main supplier: MAPLETON CITY · 14,000 people · 2024
1/2 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 Mapleton

SupplierPopulation served
MAPLETON CITY 14,000
CENTRAL UTAH WCD - UTAH VALLEY 0

Frequently asked questions about Mapleton tap water

Is Mapleton tap water safe to drink?

EPA testing detected 23 contaminants in the water serving Mapleton. 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 Mapleton?

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

What contaminants are in Mapleton's water?

The contaminants EPA monitoring detected in Mapleton include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium. 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.