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Tap water quality report

Cedar Grove, WI

EPA monitoring detected 19 contaminants across the 1 water supplier serving Cedar Grove. 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
2,213
people served
19
contaminants found
Wisconsin rankings Lead in Wisconsin PFAS in Wisconsin

What was found in Cedar Grove'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
Fluoride
722.5 µg/L 18%
of the EPA limit 4000 µg/L
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2017
1/1 SYR4
Copper
303.45 µg/L 23%
of the EPA limit 1300 µg/L
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2019
1/1 SYR4
Barium
27.8 µg/L 1.4%
of the EPA limit 2000 µg/L
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2017
1/1 SYR4
Lead
22.78 µg/L 152%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2019
1/1 SYR4
TTHM
15.069 µg/L 19%
of the EPA limit 80 µg/L
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2019
1/1 SYR4
Chloroform
7.535 µg/L
No EPA limit set
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
5.3149 µg/L 8.9%
of the EPA limit 60 µg/L
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2019
1/1 SYR4
Bromodichloromethane
4.527 µg/L
No EPA limit set
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2019
1/1 SYR4
Gross Alpha, Excl. Radon And U
3.854 pCi/L 26%
of the EPA limit 15 pCi/L
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2014
1/1 SYR4
Dibromochloromethane
2.788 µg/L
No EPA limit set
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2019
1/1 SYR4
Dichloroacetic Acid
2.628 µg/L
No EPA limit set
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2019
1/1 SYR4
Arsenic
2.414 µg/L 24%
of the EPA limit 10 µg/L
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2017
1/1 SYR4
Combined Radium (-226 And -228)
1.985 pCi/L 40%
of the EPA limit 5 pCi/L
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2017
1/1 SYR4
Trichloroacetic Acid
1.8275 µg/L
No EPA limit set
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2019
1/1 SYR4
Dibromoacetic Acid
0.7450 µg/L
No EPA limit set
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2019
1/1 SYR4
Chromium
0.6967 µg/L 0.7%
of the EPA limit 100 µg/L
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2017
1/1 SYR4
Monobromoacetic Acid
0.4100 µg/L
No EPA limit set
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2019
1/1 SYR4
Cadmium
0.1080 µg/L 2.2%
of the EPA limit 5 µg/L
Main supplier: CEDAR GROVE WATERWORKS · 2,213 people · 2017
1/1 SYR4
Lead
0.0089 mg/L 59%
of the EPA limit 0.0150 mg/L
Main supplier: CEDAR GROVE WATERWORKS · 2,213 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 Cedar Grove

SupplierPopulation served
CEDAR GROVE WATERWORKS 2,213

Frequently asked questions about Cedar Grove tap water

Is Cedar Grove tap water safe to drink?

EPA testing detected 19 contaminants in the water serving Cedar Grove. 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 Cedar Grove?

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

What contaminants are in Cedar Grove's water?

The contaminants EPA monitoring detected in Cedar Grove include Fluoride, Copper, Barium, Lead, TTHM. 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.