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Tap water quality report

Granton, WI

EPA monitoring detected 21 contaminants across the 1 water supplier serving Granton. 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
349
people served
21
contaminants found
Wisconsin rankings Lead in Wisconsin PFAS in Wisconsin

What was found in Granton'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
4300 µg/L 43%
of the EPA limit 10000 µg/L
 1/1 SYR4
Nitrate-Nitrite
3400 µg/L 34%
of the EPA limit 10000 µg/L
 1/1 SYR4
Copper
770 µg/L 59%
of the EPA limit 1300 µg/L
 1/1 SYR4
Fluoride
230 µg/L 5.8%
of the EPA limit 4000 µg/L
 1/1 SYR4
TTHM
88 µg/L 110%
of the EPA limit, in the worst sample — 80 µg/L
 1/1 SYR4
Lead
43 µg/L 287%
of the EPA limit, in the worst sample — 15 µg/L
 1/1 SYR4
Barium
37 µg/L 1.9%
of the EPA limit 2000 µg/L
 1/1 SYR4
Dibromochloromethane
36 µg/L
No EPA limit set
 1/1 SYR4
Bromodichloromethane
27 µg/L
No EPA limit set
 1/1 SYR4
Total Haloacetic Acids (HAA5)
19.5 µg/L 33%
of the EPA limit 60 µg/L
 1/1 SYR4
Bromoform
17 µg/L
No EPA limit set
 1/1 SYR4
Chloroform
12 µg/L
No EPA limit set
 1/1 SYR4
Dibromoacetic Acid
9.2 µg/L
No EPA limit set
 1/1 SYR4
Dichloroacetic Acid
5.3 µg/L
No EPA limit set
 1/1 SYR4
Trichloroacetic Acid
2.7 µg/L
No EPA limit set
 1/1 SYR4
Monobromoacetic Acid
1.7 µg/L
No EPA limit set
 1/1 SYR4
Chromium
1.6 µg/L 1.6%
of the EPA limit 100 µg/L
 1/1 SYR4
Combined Radium (-226 And -228)
1.5 pCi/L 30%
of the EPA limit 5 pCi/L
 1/1 SYR4
Ethylene Dibromide
1.3 µg/L 2600%
of the EPA limit, in the worst sample — 0.0500 µg/L
 1/1 SYR4
Lasso
0.0900 µg/L 4.5%
of the EPA limit 2 µg/L
 1/1 SYR4
Lead
0.0022 mg/L 15%
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 Granton

SupplierPopulation served
GRANTON WATERWORKS 349

Frequently asked questions about Granton tap water

Is Granton tap water safe to drink?

EPA testing detected 21 contaminants in the water serving Granton. 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 Granton?

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

What contaminants are in Granton's water?

The contaminants EPA monitoring detected in Granton include Nitrate, Nitrate-Nitrite, Copper, Fluoride, 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.