What was found in Muskego'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.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 1702 µg/L 43% of the EPA limit 4000 µg/L Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2017 | 9/9 | SYR4 |
| Copper | 474.4 µg/L 36% of the EPA limit 1300 µg/L Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2017
Highest in the city: 502.5 µg/L — WILLOW GLEN APARTMENTS · 80 people · 2018 | 9/9 | SYR4 |
| Nitrate | 360 µg/L 3.6% of the EPA limit 10000 µg/L Highest in the city: MUSKEGO LAKE AIRE APARTMENTS · 35 people · 2019 | 7/9 | SYR4 |
| Barium | 151.2 µg/L 7.6% of the EPA limit 2000 µg/L Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2017
Highest in the city: 200 µg/L — HALE PARK MEADOWS · 720 people · 2018 | 9/9 | SYR4 |
| Nitrate-Nitrite | 200 µg/L 2% of the EPA limit 10000 µg/L Highest in the city: MARLAN MEADOWS HOMEOWNERS ASSOC · 210 people · 2018 | 2/9 | SYR4 |
| Lead | 40.19 µg/L 268% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2017 | 8/9 | SYR4 |
| Gross Alpha, Excl. Radon And U | 14.8 pCi/L 99% of the EPA limit 15 pCi/L Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2016 | 6/9 | SYR4 |
| TTHM | 14.11 µg/L 18% of the EPA limit 80 µg/L Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2019 | 2/9 | SYR4 |
| Gross Beta Particle Activity | 10.54 pCi/L No EPA limit set Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2016 | 1/9 | SYR4 |
| Arsenic | 6.7175 µg/L 67% of the EPA limit 10 µg/L Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2017
Highest in the city: 8.22 µg/L — LAKE MEADOWS WATER TRUST · 750 people · 2018 | 9/9 | SYR4 |
| Total Haloacetic Acids (HAA5) | 4.675 µg/L 7.8% of the EPA limit 60 µg/L Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2019
Highest in the city: 4.94 µg/L — HALE PARK MEADOWS · 720 people · 2019 | 2/9 | SYR4 |
| Bromodichloromethane | 4.7 µg/L No EPA limit set Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2019 | 2/9 | SYR4 |
| Chloroform | 4.45 µg/L No EPA limit set Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2019
Highest in the city: 4.625 µg/L — HALE PARK MEADOWS · 720 people · 2019 | 2/9 | SYR4 |
| Combined Radium (-226 And -228) | 4.302 pCi/L 86% of the EPA limit 5 pCi/L Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2017 | 9/9 | SYR4 |
| Dibromochloromethane | 4.185 µg/L No EPA limit set Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2019 | 2/9 | SYR4 |
| Dichloroacetic Acid | 2.18 µg/L No EPA limit set Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2019
Highest in the city: 2.9 µg/L — HALE PARK MEADOWS · 720 people · 2019 | 2/9 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 2.8 µg/L 47% of the EPA limit 6 µg/L Highest in the city: STONEY CREEK ADULT COMMUNITY · 95 people · 2018 | 3/9 | SYR4 |
| Chromium | 2.758 µg/L 2.8% of the EPA limit 100 µg/L Highest in the city: DURHAM MEADOWS WATER TRUST · 700 people · 2018 | 3/9 | SYR4 |
| Dibromoacetic Acid | 2.1 µg/L No EPA limit set Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2019 | 2/9 | SYR4 |
| Combined Uranium | 1.50967 µg/L 5% of the EPA limit 30 µg/L Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2015 | 2/9 | SYR4 |
| Trichloroacetic Acid | 1.19 µg/L No EPA limit set Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2019
Highest in the city: 1.475 µg/L — HALE PARK MEADOWS · 720 people · 2019 | 2/9 | SYR4 |
| Toluene | 1.23 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the city: DURHAM MEADOWS WATER TRUST · 700 people · 2019 | 1/9 | SYR4 |
| Bromoform | 1.1 µg/L No EPA limit set Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2019 | 1/9 | SYR4 |
| Monobromoacetic Acid | 0.5000 µg/L No EPA limit set Highest in the city: HALE PARK MEADOWS · 720 people · 2019 | 1/9 | SYR4 |
| Styrene | 0.3375 µg/L 0.3% of the EPA limit 100 µg/L Highest in the city: DURHAM MEADOWS WATER TRUST · 700 people · 2019 | 2/9 | SYR4 |
| Mercury | 0.0790 µg/L 4% of the EPA limit 2 µg/L Highest in the city: WILLOW GLEN APARTMENTS · 80 people · 2018 | 1/9 | SYR4 |
| Lead | 0.0039 mg/L 26% of the EPA limit 0.0150 mg/L Main supplier: MUSKEGO WATER UTILITY · 8,150 people · 2023
Highest in the city: 0.0064 mg/L — HALE PARK MEADOWS · 720 people · 2024 | 9/9 | 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 Muskego
| Supplier | Population served |
|---|---|
| MUSKEGO WATER UTILITY | 8,150 |
| LAKE MEADOWS WATER TRUST | 750 |
| HALE PARK MEADOWS | 720 |
| DURHAM MEADOWS WATER TRUST | 700 |
| MARLAN MEADOWS HOMEOWNERS ASSOC | 210 |
| PIONEER CENTRE | 140 |
| STONEY CREEK ADULT COMMUNITY | 95 |
| WILLOW GLEN APARTMENTS | 80 |
| MUSKEGO LAKE AIRE APARTMENTS | 35 |
Frequently asked questions about Muskego tap water
Is Muskego tap water safe to drink?
EPA testing detected 27 contaminants in the water serving Muskego. 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 Muskego?
9 public water suppliers report drinking-water monitoring for Muskego, Wisconsin to the EPA. Each is listed above with its population served.
What contaminants are in Muskego's water?
The contaminants EPA monitoring detected in Muskego include Fluoride, Copper, Nitrate, Barium, Nitrate-Nitrite. 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.