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Tap water quality report

Sheboygan, WI

EPA monitoring detected 25 contaminants across the 2 water suppliers serving Sheboygan. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

2
water suppliers
54,527
people served
25
contaminants found
Wisconsin rankings Lead in Wisconsin PFAS in Wisconsin

What was found in Sheboygan's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
3000 µg/L 30%
of the EPA limit 10000 µg/L
 2/2 SYR4
Nitrate-Nitrite
2300 µg/L 23%
of the EPA limit 10000 µg/L
 2/2 SYR4
Fluoride
768 µg/L 19%
of the EPA limit 4000 µg/L
 2/2 SYR4
Copper
430 µg/L 33%
of the EPA limit 1300 µg/L
 2/2 SYR4
Barium
66 µg/L 3.3%
of the EPA limit 2000 µg/L
 2/2 SYR4
TTHM
47.3 µg/L 59%
of the EPA limit 80 µg/L
 2/2 SYR4
Chloroform
29 µg/L
No EPA limit set
 2/2 SYR4
Lead
25 µg/L 167%
of the EPA limit, in the worst sample — 15 µg/L
 2/2 SYR4
Total Haloacetic Acids (HAA5)
22.8 µg/L 38%
of the EPA limit 60 µg/L
 2/2 SYR4
Trichloroacetic Acid
14 µg/L
No EPA limit set
 2/2 SYR4
Bromodichloromethane
13 µg/L
No EPA limit set
 2/2 SYR4
Dichloroacetic Acid
10 µg/L
No EPA limit set
 2/2 SYR4
Dibromochloromethane
8.7 µg/L
No EPA limit set
 2/2 SYR4
Arsenic
5.4 µg/L 54%
of the EPA limit 10 µg/L
 2/2 SYR4
Bromoform
3.7 µg/L
No EPA limit set
 2/2 SYR4
Dibromoacetic Acid
2.4 µg/L
No EPA limit set
 2/2 SYR4
Combined Radium (-226 And -228)
2.117 pCi/L 42%
of the EPA limit 5 pCi/L
 1/2 SYR4
Monobromoacetic Acid
0.7300 µg/L
No EPA limit set
 1/2 SYR4
Chromium
0.6000 µg/L 0.6%
of the EPA limit 100 µg/L
 1/2 SYR4
Selenium
0.6000 µg/L 1.2%
of the EPA limit 50 µg/L
 1/2 SYR4
Dalapon
0.3700 µg/L 0.2%
of the EPA limit 200 µg/L
 1/2 SYR4
Antimony, Total
0.2000 µg/L 3.3%
of the EPA limit 6 µg/L
 1/2 SYR4
Atrazine
0.0400 µg/L 1.3%
of the EPA limit 3 µg/L
 1/2 SYR4
Hexachlorocyclopentadiene
0.0200 µg/L 0%
of the EPA limit 50 µg/L
 1/2 SYR4
Lead
0.0029 mg/L 19%
of the EPA limit 0.0150 mg/L
 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 single worst sample on record — 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 Sheboygan

SupplierPopulation served
SHEBOYGAN WATER UTILITIES 49,931
SHEBOYGAN TN WATERWORKS 4,596

Frequently asked questions about Sheboygan tap water

Is Sheboygan tap water safe to drink?

EPA testing detected 25 contaminants in the water serving Sheboygan. 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 Sheboygan?

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

What contaminants are in Sheboygan's water?

The contaminants EPA monitoring detected in Sheboygan include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium. The full list, with the highest level found 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.