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Tap water quality report

Farmington, MN

EPA monitoring detected 16 contaminants across the 2 water suppliers serving Farmington. 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
26,686
people served
16
contaminants found
Minnesota rankings Lead in Minnesota PFAS in Minnesota

What was found in Farmington'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
Fluoride
1145 µg/L 29%
of the EPA limit 4000 µg/L
Main supplier: Farmington · 23,534 people · 2019
Highest in the city: 1390 µg/L — Empire · 3,152 people · 2019
2/2 SYR4
Nitrate-Nitrite
1100 µg/L 11%
of the EPA limit 10000 µg/L
Main supplier: Farmington · 23,534 people · 2019
1/2 SYR4
Copper
740.25 µg/L 57%
of the EPA limit 1300 µg/L
Main supplier: Farmington · 23,534 people · 2019
Highest in the city: 750.45 µg/L — Empire · 3,152 people · 2017
2/2 SYR4
Barium
127.3 µg/L 6.4%
of the EPA limit 2000 µg/L
Main supplier: Farmington · 23,534 people · 2017
Highest in the city: 132 µg/L — Empire · 3,152 people · 2014
2/2 SYR4
Cyanide
114 µg/L 57%
of the EPA limit 200 µg/L
Main supplier: Farmington · 23,534 people · 2017
1/2 SYR4
Gross Alpha, Excl. Radon And U
16.1 pCi/L 107%
of the EPA limit, at the 95th percentile of samples — 15 pCi/L
Main supplier: Farmington · 23,534 people · 2018
2/2 SYR4
Chloroform
4.855 µg/L
No EPA limit set
Main supplier: Farmington · 23,534 people · 2019
Highest in the city: 11.705 µg/L — Empire · 3,152 people · 2019
2/2 SYR4
Trichloroacetic Acid
1.665 µg/L
No EPA limit set
Main supplier: Farmington · 23,534 people · 2019
Highest in the city: 4.63 µg/L — Empire · 3,152 people · 2019
2/2 SYR4
Lead
3.68 µg/L 25%
of the EPA limit 15 µg/L
Main supplier: Farmington · 23,534 people · 2019
Highest in the city: 4.32 µg/L — Empire · 3,152 people · 2017
2/2 SYR4
Bromodichloromethane
3.2 µg/L
No EPA limit set
Main supplier: Farmington · 23,534 people · 2019
2/2 SYR4
Combined Uranium
2.72 µg/L 9.1%
of the EPA limit 30 µg/L
Main supplier: Farmington · 23,534 people · 2014
1/2 SYR4
Dibromochloromethane
2.61 µg/L
No EPA limit set
Main supplier: Farmington · 23,534 people · 2019
1/2 SYR4
Dichloroacetic Acid
1.85 µg/L
No EPA limit set
Main supplier: Farmington · 23,534 people · 2019
Highest in the city: 2.47 µg/L — Empire · 3,152 people · 2019
2/2 SYR4
Chromium
0.2495 µg/L 0.2%
of the EPA limit 100 µg/L
Main supplier: Farmington · 23,534 people · 2017
1/2 SYR4
Pfba
0.0357 µg/L
No EPA limit set
Main supplier: Farmington · 23,534 people · 2024
1/2 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: Farmington · 23,534 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 Farmington

SupplierPopulation served
Farmington 23,534
Empire 3,152

Frequently asked questions about Farmington tap water

Is Farmington tap water safe to drink?

EPA testing detected 16 contaminants in the water serving Farmington. 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 Farmington?

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

What contaminants are in Farmington's water?

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