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Tap water quality report

Oconto Falls, WI

EPA monitoring detected 19 contaminants across the 2 water suppliers serving Oconto Falls. 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
2,972
people served
19
contaminants found
Wisconsin rankings Lead in Wisconsin PFAS in Wisconsin

What was found in Oconto Falls'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
1470 µg/L 15%
of the EPA limit 10000 µg/L
Highest in the city: OCONTO FALLS MHP · 80 people · 2019
1/2 SYR4
Fluoride
1427.5 µg/L 36%
of the EPA limit 4000 µg/L
Main supplier: OCONTO FALLS WATERWORKS · 2,892 people · 2019
1/2 SYR4
Nitrate-Nitrite
573.5 µg/L 5.7%
of the EPA limit 10000 µg/L
Main supplier: OCONTO FALLS WATERWORKS · 2,892 people · 2017
Highest in the city: 1350 µg/L — OCONTO FALLS MHP · 80 people · 2018
2/2 SYR4
Copper
507.5 µg/L 39%
of the EPA limit 1300 µg/L
Main supplier: OCONTO FALLS WATERWORKS · 2,892 people · 2019
2/2 SYR4
Barium
157.5 µg/L 7.9%
of the EPA limit 2000 µg/L
Main supplier: OCONTO FALLS WATERWORKS · 2,892 people · 2017
2/2 SYR4
Lead
11.2 µg/L 75%
of the EPA limit 15 µg/L
Main supplier: OCONTO FALLS WATERWORKS · 2,892 people · 2019
2/2 SYR4
Gross Alpha, Excl. Radon And U
5.374 pCi/L 36%
of the EPA limit 15 pCi/L
Main supplier: OCONTO FALLS WATERWORKS · 2,892 people · 2017
Highest in the city: 8.55 pCi/L — OCONTO FALLS MHP · 80 people · 2018
2/2 SYR4
TTHM
7.745 µg/L 9.7%
of the EPA limit 80 µg/L
Main supplier: OCONTO FALLS WATERWORKS · 2,892 people · 2019
1/2 SYR4
Chloroform
6.6 µg/L
No EPA limit set
Main supplier: OCONTO FALLS WATERWORKS · 2,892 people · 2019
1/2 SYR4
Arsenic
5.7 µg/L 57%
of the EPA limit 10 µg/L
Main supplier: OCONTO FALLS WATERWORKS · 2,892 people · 2017
1/2 SYR4
Combined Radium (-226 And -228)
4.326 pCi/L 87%
of the EPA limit 5 pCi/L
Main supplier: OCONTO FALLS WATERWORKS · 2,892 people · 2017
2/2 SYR4
Combined Uranium
3.8 µg/L 13%
of the EPA limit 30 µg/L
Highest in the city: OCONTO FALLS MHP · 80 people · 2018
1/2 SYR4
Total Haloacetic Acids (HAA5)
3.33 µg/L 5.6%
of the EPA limit 60 µg/L
Main supplier: OCONTO FALLS WATERWORKS · 2,892 people · 2019
1/2 SYR4
Bromodichloromethane
2.4 µg/L
No EPA limit set
Main supplier: OCONTO FALLS WATERWORKS · 2,892 people · 2019
1/2 SYR4
Dichloroacetic Acid
1.98 µg/L
No EPA limit set
Main supplier: OCONTO FALLS WATERWORKS · 2,892 people · 2019
1/2 SYR4
Dibromochloromethane
1.1 µg/L
No EPA limit set
Main supplier: OCONTO FALLS WATERWORKS · 2,892 people · 2019
1/2 SYR4
Trichloroacetic Acid
1.1 µg/L
No EPA limit set
Main supplier: OCONTO FALLS WATERWORKS · 2,892 people · 2019
1/2 SYR4
Dibromoacetic Acid
0.3100 µg/L
No EPA limit set
Main supplier: OCONTO FALLS WATERWORKS · 2,892 people · 2019
1/2 SYR4
Lead
0.0110 mg/L 73%
of the EPA limit 0.0150 mg/L
Main supplier: OCONTO FALLS WATERWORKS · 2,892 people · 2023
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 Oconto Falls

SupplierPopulation served
OCONTO FALLS WATERWORKS 2,892
OCONTO FALLS MHP 80

Frequently asked questions about Oconto Falls tap water

Is Oconto Falls tap water safe to drink?

EPA testing detected 19 contaminants in the water serving Oconto Falls. 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 Oconto Falls?

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

What contaminants are in Oconto Falls's water?

The contaminants EPA monitoring detected in Oconto Falls include Nitrate, Fluoride, Nitrate-Nitrite, 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.