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Tap water quality report

Caledonia, WI

EPA monitoring detected 14 contaminants across the 1 water supplier serving Caledonia. 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.

1
water supplier
21,819
people served
14
contaminants found
Wisconsin rankings Lead in Wisconsin PFAS in Wisconsin

What was found in Caledonia'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
Copper
476 µg/L 37%
of the EPA limit 1300 µg/L
Main supplier: CALEDONIA WATER UTILITY - VILLAGE OF · 21,819 people · 2017
1/1 SYR4
TTHM
58.742 µg/L 73%
of the EPA limit 80 µg/L
Main supplier: CALEDONIA WATER UTILITY - VILLAGE OF · 21,819 people · 2019
1/1 SYR4
Chloroform
32 µg/L
No EPA limit set
Main supplier: CALEDONIA WATER UTILITY - VILLAGE OF · 21,819 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
29.6515 µg/L 49%
of the EPA limit 60 µg/L
Main supplier: CALEDONIA WATER UTILITY - VILLAGE OF · 21,819 people · 2019
1/1 SYR4
Lead
20.55 µg/L 137%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: CALEDONIA WATER UTILITY - VILLAGE OF · 21,819 people · 2017
1/1 SYR4
Bromodichloromethane
17.85 µg/L
No EPA limit set
Main supplier: CALEDONIA WATER UTILITY - VILLAGE OF · 21,819 people · 2019
1/1 SYR4
Dichloroacetic Acid
16 µg/L
No EPA limit set
Main supplier: CALEDONIA WATER UTILITY - VILLAGE OF · 21,819 people · 2019
1/1 SYR4
Trichloroacetic Acid
11.95 µg/L
No EPA limit set
Main supplier: CALEDONIA WATER UTILITY - VILLAGE OF · 21,819 people · 2019
1/1 SYR4
Dibromochloromethane
9.085 µg/L
No EPA limit set
Main supplier: CALEDONIA WATER UTILITY - VILLAGE OF · 21,819 people · 2019
1/1 SYR4
Monochloroacetic Acid
2.66 µg/L
No EPA limit set
Main supplier: CALEDONIA WATER UTILITY - VILLAGE OF · 21,819 people · 2019
1/1 SYR4
Dibromoacetic Acid
2.065 µg/L
No EPA limit set
Main supplier: CALEDONIA WATER UTILITY - VILLAGE OF · 21,819 people · 2019
1/1 SYR4
Monobromoacetic Acid
1.53 µg/L
No EPA limit set
Main supplier: CALEDONIA WATER UTILITY - VILLAGE OF · 21,819 people · 2019
1/1 SYR4
Bromoform
1.485 µg/L
No EPA limit set
Main supplier: CALEDONIA WATER UTILITY - VILLAGE OF · 21,819 people · 2019
1/1 SYR4
Lead
0.0033 mg/L 22%
of the EPA limit 0.0150 mg/L
Main supplier: CALEDONIA WATER UTILITY - VILLAGE OF · 21,819 people · 2023
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 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 Caledonia

SupplierPopulation served
CALEDONIA WATER UTILITY - VILLAGE OF 21,819

Frequently asked questions about Caledonia tap water

Is Caledonia tap water safe to drink?

EPA testing detected 14 contaminants in the water serving Caledonia. 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 Caledonia?

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

What contaminants are in Caledonia's water?

The contaminants EPA monitoring detected in Caledonia include Copper, TTHM, Chloroform, Total Haloacetic Acids (HAA5), Lead. 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.