Tap WaterIndex

← Wisconsin

Tap water quality report

Prairie Du Sac, WI

EPA monitoring detected 12 contaminants across the 4 water suppliers serving Prairie Du Sac. 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.

4
water suppliers
4,666
people served
12
contaminants found
Wisconsin rankings Lead in Wisconsin PFAS in Wisconsin

What was found in Prairie Du Sac'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
10900 µg/L 109%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
Main supplier: PRAIRIE DU SAC WATERWORKS · 4,006 people · 2019
3/4 SYR4
Nitrate-Nitrite
9700 µg/L 97%
of the EPA limit 10000 µg/L
Main supplier: PRAIRIE DU SAC WATERWORKS · 4,006 people · 2017
3/4 SYR4
Fluoride
1012.5 µg/L 25%
of the EPA limit 4000 µg/L
Main supplier: PRAIRIE DU SAC WATERWORKS · 4,006 people · 2019
3/4 SYR4
Copper
175.6 µg/L 14%
of the EPA limit 1300 µg/L
Main supplier: PRAIRIE DU SAC WATERWORKS · 4,006 people · 2017
Highest in the city: 854 µg/L — MAPLE PARK CONDOMINIUMS · 150 people · 2018
4/4 SYR4
Barium
29 µg/L 1.5%
of the EPA limit 2000 µg/L
Main supplier: PRAIRIE DU SAC WATERWORKS · 4,006 people · 2017
Highest in the city: 34.33 µg/L — BLUFFVIEW SANITARY DISTRICT · 450 people · 2017
4/4 SYR4
Lead
11.15 µg/L 74%
of the EPA limit 15 µg/L
Main supplier: PRAIRIE DU SAC WATERWORKS · 4,006 people · 2017
4/4 SYR4
Gross Alpha, Excl. Radon And U
8.46 pCi/L 56%
of the EPA limit 15 pCi/L
Main supplier: PRAIRIE DU SAC WATERWORKS · 4,006 people · 2017
3/4 SYR4
Gross Beta Particle Activity
7.92 pCi/L
No EPA limit set
Main supplier: PRAIRIE DU SAC WATERWORKS · 4,006 people · 2015
2/4 SYR4
Combined Radium (-226 And -228)
5.44 pCi/L 109%
of the EPA limit, at the 95th percentile of samples — 5 pCi/L
Main supplier: PRAIRIE DU SAC WATERWORKS · 4,006 people · 2019
4/4 SYR4
Combined Uranium
2.3845 µg/L 7.9%
of the EPA limit 30 µg/L
Main supplier: PRAIRIE DU SAC WATERWORKS · 4,006 people · 2015
2/4 SYR4
Total Haloacetic Acids (HAA5)
0.2000 µg/L 0.3%
of the EPA limit 60 µg/L
Main supplier: PRAIRIE DU SAC WATERWORKS · 4,006 people · 2019
1/4 SYR4
Lead
0.0014 mg/L 9.3%
of the EPA limit 0.0150 mg/L
Main supplier: PRAIRIE DU SAC WATERWORKS · 4,006 people · 2023
Highest in the city: 0.0016 mg/L — PINE VISTA MHP 1 · 60 people · 2024
4/4 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 Prairie Du Sac

SupplierPopulation served
PRAIRIE DU SAC WATERWORKS 4,006
BLUFFVIEW SANITARY DISTRICT 450
MAPLE PARK CONDOMINIUMS 150
PINE VISTA MHP 1 60

Frequently asked questions about Prairie Du Sac tap water

Is Prairie Du Sac tap water safe to drink?

EPA testing detected 12 contaminants in the water serving Prairie Du Sac. 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 Prairie Du Sac?

4 public water suppliers report drinking-water monitoring for Prairie Du Sac, Wisconsin to the EPA. Each is listed above with its population served.

What contaminants are in Prairie Du Sac's water?

The contaminants EPA monitoring detected in Prairie Du Sac include Nitrate, Nitrate-Nitrite, 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.