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Tap water quality report

Elk River, MN

EPA monitoring detected 17 contaminants across the 2 water suppliers serving Elk River. 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
19,712
people served
17
contaminants found
Minnesota rankings Lead in Minnesota PFAS in Minnesota

What was found in Elk River'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
2300 µg/L 23%
of the EPA limit 10000 µg/L
Main supplier: Elk River · 19,532 people · 2019
1/2 SYR4
Fluoride
1400 µg/L 35%
of the EPA limit 4000 µg/L
Main supplier: Elk River · 19,532 people · 2019
1/2 SYR4
Copper
287.55 µg/L 22%
of the EPA limit 1300 µg/L
Main supplier: Elk River · 19,532 people · 2019
Highest in the city: 326.4 µg/L — Ridges of Rice Lake Housing Development · 180 people · 2018
2/2 SYR4
Barium
27.505 µg/L 1.4%
of the EPA limit 2000 µg/L
Main supplier: Elk River · 19,532 people · 2018
Highest in the city: 41.6 µg/L — Ridges of Rice Lake Housing Development · 180 people · 2018
2/2 SYR4
Chloroform
8.52 µg/L
No EPA limit set
Main supplier: Elk River · 19,532 people · 2019
2/2 SYR4
Lead
3.77 µg/L 25%
of the EPA limit 15 µg/L
Main supplier: Elk River · 19,532 people · 2019
Highest in the city: 6.4 µg/L — Ridges of Rice Lake Housing Development · 180 people · 2018
2/2 SYR4
Dichloroacetic Acid
4.65 µg/L
No EPA limit set
Main supplier: Elk River · 19,532 people · 2019
2/2 SYR4
Trichloroacetic Acid
4.6 µg/L
No EPA limit set
Main supplier: Elk River · 19,532 people · 2019
2/2 SYR4
Chromium
3.76 µg/L 3.8%
of the EPA limit 100 µg/L
Main supplier: Elk River · 19,532 people · 2018
1/2 SYR4
Gross Alpha, Excl. Radon And U
3.1 pCi/L 21%
of the EPA limit 15 pCi/L
Main supplier: Elk River · 19,532 people · 2018
1/2 SYR4
Arsenic
2.88 µg/L 29%
of the EPA limit 10 µg/L
Highest in the city: Ridges of Rice Lake Housing Development · 180 people · 2018
1/2 SYR4
Bromodichloromethane
2.69 µg/L
No EPA limit set
Main supplier: Elk River · 19,532 people · 2019
1/2 SYR4
Dibromochloromethane
1.6 µg/L
No EPA limit set
Main supplier: Elk River · 19,532 people · 2019
1/2 SYR4
Dibromoacetic Acid
1.1 µg/L
No EPA limit set
Main supplier: Elk River · 19,532 people · 2019
1/2 SYR4
Bromoform
0.5000 µg/L
No EPA limit set
Main supplier: Elk River · 19,532 people · 2019
1/2 SYR4
2,4-D
0.2500 µg/L 0.4%
of the EPA limit 70 µg/L
Main supplier: Elk River · 19,532 people · 2018
1/2 SYR4
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
Main supplier: Elk River · 19,532 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 Elk River

SupplierPopulation served
Elk River 19,532
Ridges of Rice Lake Housing Development 180

Frequently asked questions about Elk River tap water

Is Elk River tap water safe to drink?

EPA testing detected 17 contaminants in the water serving Elk River. 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 Elk River?

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

What contaminants are in Elk River's water?

The contaminants EPA monitoring detected in Elk River include Nitrate-Nitrite, Fluoride, Copper, Barium, Chloroform. 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.