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Tap water quality report

Willow River, MN

EPA monitoring detected 12 contaminants across the 1 water supplier serving Willow 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.

1
water supplier
410
people served
12
contaminants found
Minnesota rankings Lead in Minnesota PFAS in Minnesota

What was found in Willow 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
Fluoride
1150 µg/L 29%
of the EPA limit 4000 µg/L
Main supplier: Willow River · 410 people · 2019
1/1 SYR4
Copper
587.2 µg/L 45%
of the EPA limit 1300 µg/L
Main supplier: Willow River · 410 people · 2019
1/1 SYR4
Nitrate-Nitrite
110 µg/L 1.1%
of the EPA limit 10000 µg/L
Main supplier: Willow River · 410 people · 2019
1/1 SYR4
Barium
76.6 µg/L 3.8%
of the EPA limit 2000 µg/L
Main supplier: Willow River · 410 people · 2017
1/1 SYR4
Lead
19.88 µg/L 133%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: Willow River · 410 people · 2019
1/1 SYR4
Bromoform
8.24 µg/L
No EPA limit set
Main supplier: Willow River · 410 people · 2019
1/1 SYR4
Gross Alpha, Excl. Radon And U
6.805 pCi/L 45%
of the EPA limit 15 pCi/L
Main supplier: Willow River · 410 people · 2017
1/1 SYR4
Dibromoacetic Acid
3.25 µg/L
No EPA limit set
Main supplier: Willow River · 410 people · 2019
1/1 SYR4
Dibromochloromethane
3 µg/L
No EPA limit set
Main supplier: Willow River · 410 people · 2019
1/1 SYR4
Bromodichloromethane
1.29 µg/L
No EPA limit set
Main supplier: Willow River · 410 people · 2019
1/1 SYR4
Chloroform
0.3000 µg/L
No EPA limit set
Main supplier: Willow River · 410 people · 2019
1/1 SYR4
Lead
0.0110 mg/L 73%
of the EPA limit 0.0150 mg/L
Main supplier: Willow River · 410 people · 2023
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 Willow River

SupplierPopulation served
Willow River 410

Frequently asked questions about Willow River tap water

Is Willow River tap water safe to drink?

EPA testing detected 12 contaminants in the water serving Willow 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 Willow River?

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

What contaminants are in Willow River's water?

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