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Tap water quality report

Nephi, UT

EPA monitoring detected 21 contaminants across the 1 water supplier serving Nephi. 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.

1
water supplier
7,122
people served
21
contaminants found
Utah rankings Lead in Utah PFAS in Utah

What was found in Nephi'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-Nitrite
3695 µg/L 37%
of the EPA limit 10000 µg/L
Main supplier: NEPHI CITY · 7,122 people · 2018
1/1 SYR4
Nitrate
3282 µg/L 33%
of the EPA limit 10000 µg/L
Main supplier: NEPHI CITY · 7,122 people · 2019
1/1 SYR4
Fluoride
227.825 µg/L 5.7%
of the EPA limit 4000 µg/L
Main supplier: NEPHI CITY · 7,122 people · 2018
1/1 SYR4
Copper
180.3 µg/L 14%
of the EPA limit 1300 µg/L
Main supplier: NEPHI CITY · 7,122 people · 2018
1/1 SYR4
Barium
94.75 µg/L 4.7%
of the EPA limit 2000 µg/L
Main supplier: NEPHI CITY · 7,122 people · 2018
1/1 SYR4
TTHM
14.4 µg/L 18%
of the EPA limit 80 µg/L
Main supplier: NEPHI CITY · 7,122 people · 2019
1/1 SYR4
Chloroform
12.25 µg/L
No EPA limit set
Main supplier: NEPHI CITY · 7,122 people · 2019
1/1 SYR4
Lithium
12 µg/L
No EPA limit set
Main supplier: NEPHI CITY · 7,122 people · 2025
1/1 UCMR-5
Monochloroacetic Acid
9.4 µg/L
No EPA limit set
Main supplier: NEPHI CITY · 7,122 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
9.045 µg/L 15%
of the EPA limit 60 µg/L
Main supplier: NEPHI CITY · 7,122 people · 2019
1/1 SYR4
Gross Beta Particle Activity
5.72 pCi/L
No EPA limit set
Main supplier: NEPHI CITY · 7,122 people · 2019
1/1 SYR4
Lead
4.24 µg/L 28%
of the EPA limit 15 µg/L
Main supplier: NEPHI CITY · 7,122 people · 2018
1/1 SYR4
Gross Alpha, Excl. Radon And U
4.07 pCi/L 27%
of the EPA limit 15 pCi/L
Main supplier: NEPHI CITY · 7,122 people · 2019
1/1 SYR4
Selenium
2.55 µg/L 5.1%
of the EPA limit 50 µg/L
Main supplier: NEPHI CITY · 7,122 people · 2018
1/1 SYR4
Cyanide
2.4 µg/L 1.2%
of the EPA limit 200 µg/L
Main supplier: NEPHI CITY · 7,122 people · 2018
1/1 SYR4
Bromodichloromethane
2.35 µg/L
No EPA limit set
Main supplier: NEPHI CITY · 7,122 people · 2019
1/1 SYR4
Dichloroacetic Acid
2.275 µg/L
No EPA limit set
Main supplier: NEPHI CITY · 7,122 people · 2019
1/1 SYR4
Dibromochloromethane
1.775 µg/L
No EPA limit set
Main supplier: NEPHI CITY · 7,122 people · 2019
1/1 SYR4
Bromoform
1.37 µg/L
No EPA limit set
Main supplier: NEPHI CITY · 7,122 people · 2019
1/1 SYR4
Arsenic
0.7750 µg/L 7.8%
of the EPA limit 10 µg/L
Main supplier: NEPHI CITY · 7,122 people · 2018
1/1 SYR4
Lead
0.0029 mg/L 19%
of the EPA limit 0.0150 mg/L
Main supplier: NEPHI CITY · 7,122 people · 2024
1/1 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 Nephi

SupplierPopulation served
NEPHI CITY 7,122

Frequently asked questions about Nephi tap water

Is Nephi tap water safe to drink?

EPA testing detected 21 contaminants in the water serving Nephi. 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 Nephi?

1 public water supplier report drinking-water monitoring for Nephi, Utah to the EPA. Each is listed above with its population served.

What contaminants are in Nephi's water?

The contaminants EPA monitoring detected in Nephi include Nitrate-Nitrite, Nitrate, 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.