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Tap water quality report

Baraboo, WI

EPA monitoring detected 24 contaminants across the 2 water suppliers serving Baraboo. 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
12,778
people served
24
contaminants found
Wisconsin rankings Lead in Wisconsin PFAS in Wisconsin

What was found in Baraboo'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
5290 µg/L 53%
of the EPA limit 10000 µg/L
Main supplier: BARABOO WATERWORKS · 12,703 people · 2019
2/2 SYR4
Nitrate-Nitrite
4540 µg/L 45%
of the EPA limit 10000 µg/L
Main supplier: BARABOO WATERWORKS · 12,703 people · 2017
2/2 SYR4
Fluoride
1200 µg/L 30%
of the EPA limit 4000 µg/L
Main supplier: BARABOO WATERWORKS · 12,703 people · 2019
1/2 SYR4
Copper
984.4 µg/L 76%
of the EPA limit 1300 µg/L
Main supplier: BARABOO WATERWORKS · 12,703 people · 2017
2/2 SYR4
Barium
48.86 µg/L 2.4%
of the EPA limit 2000 µg/L
Main supplier: BARABOO WATERWORKS · 12,703 people · 2017
2/2 SYR4
Lead
12.94 µg/L 86%
of the EPA limit 15 µg/L
Main supplier: BARABOO WATERWORKS · 12,703 people · 2017
Highest in the city: 22.6 µg/L — GLACIER VIEW SUBDIVISION · 75 people · 2018
2/2 SYR4
TTHM
10.547 µg/L 13%
of the EPA limit 80 µg/L
Main supplier: BARABOO WATERWORKS · 12,703 people · 2019
1/2 SYR4
Monochloroacetic Acid
8.768 µg/L
No EPA limit set
Main supplier: BARABOO WATERWORKS · 12,703 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
7.1655 µg/L 12%
of the EPA limit 60 µg/L
Main supplier: BARABOO WATERWORKS · 12,703 people · 2019
1/2 SYR4
Combined Radium (-226 And -228)
4.71 pCi/L 94%
of the EPA limit 5 pCi/L
Main supplier: BARABOO WATERWORKS · 12,703 people · 2017
2/2 SYR4
Gross Alpha, Excl. Radon And U
4.558 pCi/L 30%
of the EPA limit 15 pCi/L
Main supplier: BARABOO WATERWORKS · 12,703 people · 2017
2/2 SYR4
Dibromochloromethane
3.42 µg/L
No EPA limit set
Main supplier: BARABOO WATERWORKS · 12,703 people · 2019
1/2 SYR4
Bromoform
3.065 µg/L
No EPA limit set
Main supplier: BARABOO WATERWORKS · 12,703 people · 2019
1/2 SYR4
Chloroform
2.798 µg/L
No EPA limit set
Main supplier: BARABOO WATERWORKS · 12,703 people · 2019
1/2 SYR4
Bromodichloromethane
2.76 µg/L
No EPA limit set
Main supplier: BARABOO WATERWORKS · 12,703 people · 2019
1/2 SYR4
Chromium
2.365 µg/L 2.4%
of the EPA limit 100 µg/L
Main supplier: BARABOO WATERWORKS · 12,703 people · 2017
1/2 SYR4
Dichloroacetic Acid
0.9092 µg/L
No EPA limit set
Main supplier: BARABOO WATERWORKS · 12,703 people · 2019
1/2 SYR4
Trichloroacetic Acid
0.9005 µg/L
No EPA limit set
Main supplier: BARABOO WATERWORKS · 12,703 people · 2019
1/2 SYR4
Dibromoacetic Acid
0.8350 µg/L
No EPA limit set
Main supplier: BARABOO WATERWORKS · 12,703 people · 2019
1/2 SYR4
Selenium
0.7000 µg/L 1.4%
of the EPA limit 50 µg/L
Main supplier: BARABOO WATERWORKS · 12,703 people · 2017
1/2 SYR4
Monobromoacetic Acid
0.4860 µg/L
No EPA limit set
Main supplier: BARABOO WATERWORKS · 12,703 people · 2019
1/2 SYR4
Combined Uranium
0.2700 µg/L 0.9%
of the EPA limit 30 µg/L
Highest in the city: GLACIER VIEW SUBDIVISION · 75 people · 2018
1/2 SYR4
Mercury
0.1300 µg/L 6.5%
of the EPA limit 2 µg/L
Highest in the city: GLACIER VIEW SUBDIVISION · 75 people · 2018
1/2 SYR4
Lead
0.0081 mg/L 54%
of the EPA limit 0.0150 mg/L
Main supplier: BARABOO WATERWORKS · 12,703 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 Baraboo

SupplierPopulation served
BARABOO WATERWORKS 12,703
GLACIER VIEW SUBDIVISION 75

Frequently asked questions about Baraboo tap water

Is Baraboo tap water safe to drink?

EPA testing detected 24 contaminants in the water serving Baraboo. 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 Baraboo?

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

What contaminants are in Baraboo's water?

The contaminants EPA monitoring detected in Baraboo 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.