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Tap water quality report

Trempealeau, WI

EPA monitoring detected 17 contaminants across the 1 water supplier serving Trempealeau. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

1
water supplier
1,888
people served
17
contaminants found
Wisconsin rankings Lead in Wisconsin PFAS in Wisconsin

What was found in Trempealeau'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
Copper
292 µg/L 22%
of the EPA limit 1300 µg/L
 1/1 SYR4
Fluoride
190 µg/L 4.8%
of the EPA limit 4000 µg/L
 1/1 SYR4
Nitrate
172 µg/L 1.7%
of the EPA limit 10000 µg/L
 1/1 SYR4
Barium
13.7 µg/L 0.7%
of the EPA limit 2000 µg/L
 1/1 SYR4
TTHM
7.07 µg/L 8.8%
of the EPA limit 80 µg/L
 1/1 SYR4
Lead
6.5 µg/L 43%
of the EPA limit 15 µg/L
 1/1 SYR4
Chloroform
4.84 µg/L
No EPA limit set
 1/1 SYR4
Combined Radium (-226 And -228)
4 pCi/L 80%
of the EPA limit 5 pCi/L
 1/1 SYR4
Total Haloacetic Acids (HAA5)
3.873 µg/L 6.5%
of the EPA limit 60 µg/L
 1/1 SYR4
Monochloroacetic Acid
3.33 µg/L
No EPA limit set
 1/1 SYR4
Gross Alpha, Excl. Radon And U
3.1 pCi/L 21%
of the EPA limit 15 pCi/L
 1/1 SYR4
Dibromochloromethane
2.42 µg/L
No EPA limit set
 1/1 SYR4
Bromodichloromethane
2.23 µg/L
No EPA limit set
 1/1 SYR4
Dichloroacetic Acid
1.5 µg/L
No EPA limit set
 1/1 SYR4
Trichloroacetic Acid
1.09 µg/L
No EPA limit set
 1/1 SYR4
Endrin
0.1300 µg/L 6.5%
of the EPA limit 2 µg/L
 1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 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 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 Trempealeau

SupplierPopulation served
TREMPEALEAU WATERWORKS 1,888

Frequently asked questions about Trempealeau tap water

Is Trempealeau tap water safe to drink?

EPA testing detected 17 contaminants in the water serving Trempealeau. 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 Trempealeau?

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

What contaminants are in Trempealeau's water?

The contaminants EPA monitoring detected in Trempealeau include Copper, Fluoride, Nitrate, Barium, TTHM. 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.