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Tap water quality report

Montello, WI

EPA monitoring detected 15 contaminants across the 2 water suppliers serving Montello. 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.

2
water suppliers
1,401
people served
15
contaminants found
Wisconsin rankings Lead in Wisconsin PFAS in Wisconsin

What was found in Montello'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
Nitrate
3855 µg/L 39%
of the EPA limit 10000 µg/L
Main supplier: MONTELLO WATERWORKS · 1,329 people · 2019
2/2 SYR4
Nitrate-Nitrite
3500 µg/L 35%
of the EPA limit 10000 µg/L
Main supplier: MONTELLO WATERWORKS · 1,329 people · 2017
2/2 SYR4
Fluoride
1070 µg/L 27%
of the EPA limit 4000 µg/L
Main supplier: MONTELLO WATERWORKS · 1,329 people · 2017
1/2 SYR4
Copper
182.5 µg/L 14%
of the EPA limit 1300 µg/L
Main supplier: MONTELLO WATERWORKS · 1,329 people · 2017
2/2 SYR4
Barium
19.85 µg/L 1%
of the EPA limit 2000 µg/L
Main supplier: MONTELLO WATERWORKS · 1,329 people · 2017
Highest in the city: 22.9 µg/L — FOX MARQUETTE MOBILE HOME PARK · 72 people · 2018
2/2 SYR4
Lead
5.51 µg/L 37%
of the EPA limit 15 µg/L
Main supplier: MONTELLO WATERWORKS · 1,329 people · 2017
2/2 SYR4
Combined Radium (-226 And -228)
1.495 pCi/L 30%
of the EPA limit 5 pCi/L
Main supplier: MONTELLO WATERWORKS · 1,329 people · 2014
Highest in the city: 2.274 pCi/L — FOX MARQUETTE MOBILE HOME PARK · 72 people · 2015
2/2 SYR4
TTHM
2.24 µg/L 2.8%
of the EPA limit 80 µg/L
Main supplier: MONTELLO WATERWORKS · 1,329 people · 2019
1/2 SYR4
Chromium
1.585 µg/L 1.6%
of the EPA limit 100 µg/L
Main supplier: MONTELLO WATERWORKS · 1,329 people · 2017
2/2 SYR4
Dibromochloromethane
0.9640 µg/L
No EPA limit set
Main supplier: MONTELLO WATERWORKS · 1,329 people · 2019
1/2 SYR4
Bromoform
0.9270 µg/L
No EPA limit set
Main supplier: MONTELLO WATERWORKS · 1,329 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
0.8080 µg/L 1.3%
of the EPA limit 60 µg/L
Main supplier: MONTELLO WATERWORKS · 1,329 people · 2019
1/2 SYR4
Dibromoacetic Acid
0.7800 µg/L
No EPA limit set
Main supplier: MONTELLO WATERWORKS · 1,329 people · 2019
1/2 SYR4
Dichloroacetic Acid
0.2000 µg/L
No EPA limit set
Main supplier: MONTELLO WATERWORKS · 1,329 people · 2019
1/2 SYR4
Lead
0.0050 mg/L 33%
of the EPA limit 0.0150 mg/L
Main supplier: MONTELLO WATERWORKS · 1,329 people · 2023
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 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 Montello

SupplierPopulation served
MONTELLO WATERWORKS 1,329
FOX MARQUETTE MOBILE HOME PARK 72

Frequently asked questions about Montello tap water

Is Montello tap water safe to drink?

EPA testing detected 15 contaminants in the water serving Montello. 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 Montello?

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

What contaminants are in Montello's water?

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