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Tap water quality report

Weston, WI

EPA monitoring detected 23 contaminants across the 1 water supplier serving Weston. 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
16,000
people served
23
contaminants found
Wisconsin rankings Lead in Wisconsin PFAS in Wisconsin

What was found in Weston'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
5895 µg/L 59%
of the EPA limit 10000 µg/L
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2019
1/1 SYR4
Nitrate-Nitrite
5665 µg/L 57%
of the EPA limit 10000 µg/L
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2017
1/1 SYR4
Fluoride
1149.5 µg/L 29%
of the EPA limit 4000 µg/L
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2019
1/1 SYR4
Copper
554 µg/L 43%
of the EPA limit 1300 µg/L
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2017
1/1 SYR4
Barium
132 µg/L 6.6%
of the EPA limit 2000 µg/L
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2017
1/1 SYR4
TTHM
23.489 µg/L 29%
of the EPA limit 80 µg/L
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2019
1/1 SYR4
Chloroform
12.5 µg/L
No EPA limit set
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
10.37 µg/L 17%
of the EPA limit 60 µg/L
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2019
1/1 SYR4
Bromodichloromethane
6.02 µg/L
No EPA limit set
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2019
1/1 SYR4
Dichloroacetic Acid
6.02 µg/L
No EPA limit set
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2019
1/1 SYR4
Xylenes, Total
4.1 µg/L 0%
of the EPA limit 10000 µg/L
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2019
1/1 SYR4
Dibromochloromethane
4.035 µg/L
No EPA limit set
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2019
1/1 SYR4
Lead
3.7 µg/L 25%
of the EPA limit 15 µg/L
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2017
1/1 SYR4
Trichloroacetic Acid
2.74 µg/L
No EPA limit set
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2019
1/1 SYR4
Dibromoacetic Acid
1.5 µg/L
No EPA limit set
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
1.35 pCi/L 27%
of the EPA limit 5 pCi/L
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2014
1/1 SYR4
Bromoform
1.3215 µg/L
No EPA limit set
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2019
1/1 SYR4
Monochloroacetic Acid
1.3 µg/L
No EPA limit set
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2019
1/1 SYR4
Arsenic
1.1 µg/L 11%
of the EPA limit 10 µg/L
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2017
1/1 SYR4
Chromium
1.1 µg/L 1.1%
of the EPA limit 100 µg/L
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2017
1/1 SYR4
Monobromoacetic Acid
0.9830 µg/L
No EPA limit set
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2019
1/1 SYR4
Ethylbenzene
0.4800 µg/L 0.1%
of the EPA limit 700 µg/L
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 people · 2019
1/1 SYR4
Lead
0.00075 mg/L 5%
of the EPA limit 0.0150 mg/L
Main supplier: WESTON MUNICIPAL UTILITIES · 16,000 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 Weston

SupplierPopulation served
WESTON MUNICIPAL UTILITIES 16,000

Frequently asked questions about Weston tap water

Is Weston tap water safe to drink?

EPA testing detected 23 contaminants in the water serving Weston. 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 Weston?

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

What contaminants are in Weston's water?

The contaminants EPA monitoring detected in Weston 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.