Tap Water Results

Is Muskego, WI tap water safe?

Data: U.S. EPA · How we read the data · How we check it

Summary

No federal limits exceeded in EPA data for Muskego Water Utility.

9 public water systems serve parts of Muskego. The largest, Muskego Water Utility, serves 8,150 people. Your water bill names your system.

Largest system

Muskego Water Utility

8,150 people · Groundwater · EPA ID WI2681741

PFASHighest averageLimitStatus
PFOA
Not detected
–4 pptNot detected
PFOS
Not detected
–4 pptNot detected
PFHxS
Not detected
–10 pptNot detected
PFNA
Not detected
–10 pptNot detected
HFPO-DA (GenX)
Not detected
–10 pptNot detected

ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.

Lead: 3.89 ppb at the 90th percentile (Sep 2023, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 1

Across Wisconsin, 18 of 196 water systems EPA tested had PFAS above a 2024 federal limit, and 4 systems were above the lead action level in results from the last five years. Wisconsin results.

Muskego homes and lead pipes

42%
of homes built before 1980 (Wisconsin 57%, US 50%)
7%
built before 1950 (Wisconsin 23%)
15%
of households rent (Wisconsin 32%)

Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. How to check your own line.

Housing: Census American Community Survey 2020–2024 5-year estimates for Muskego city (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Muskego

  • Lake Meadows Water Trust
    750 people · Groundwater · Wisconsin · lists this city
    Not in EPA's PFAS sample
  • Hale Park Meadows Water System
    720 people · Groundwater · Wisconsin · lists this city
    Not in EPA's PFAS sample
  • Durham Meadows Water Trust
    700 people · Groundwater · Wisconsin · lists this city
    Not in EPA's PFAS sample
  • Marlan Meadows Homeowners Association
    210 people · Groundwater · Wisconsin · lists this city
    Not in EPA's PFAS sample
  • Pioneer Centre Water System
    140 people · Groundwater · Wisconsin · lists this city
    Not in EPA's PFAS sample
  • Stoney Creek Adult Community Water System
    95 people · Groundwater · Wisconsin · lists this city
    Not in EPA's PFAS sample
2 more systems
  • Willow Glen Apartments Water System
    80 people · Groundwater · Wisconsin · lists this city
    Not in EPA's PFAS sampleAlso: 2 health-based violations since 2016
  • Muskego Lake Aire Apartments Water System
    35 people · Groundwater · Wisconsin · lists this city
    Not in EPA's PFAS sample

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Franklin 6 mi
Franklin Water Utility
Franklin Water UtilityNone above limits3 ppb
New Berlin 7 mi
New Berlin Water Utility
New Berlin Water UtilityNone above limits0.33 ppb
West Allis 11 mi
West Allis Waterworks
West Allis WaterworksNone above limits2.4 ppb
Waukesha 11 mi
Waukesha Water Utility
Waukesha Water UtilityNone above limits0.56 ppb
Oak Creek 12 mi
Oak Creek Waterworks
Oak Creek WaterworksNone above limits2 ppb
Brookfield 13 mi
Brookfield Water Utility
Brookfield Water UtilityNone above limits1.5 ppb
Muskego ZIP codes (1)
  • 53150

Questions

Is Muskego tap water safe to drink?

Muskego Water Utility had 1 health-based violation since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.

Who supplies water in Muskego, WI?

9 public water systems serve parts of Muskego. The largest is Muskego Water Utility (8,150 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Muskego tap water have PFAS?

None detected above EPA's reporting limits. Muskego Water Utility had no PFAS detected in EPA's 2023–2025 testing. "Not detected" means below the reporting limit (about 2 to 20 ppt), not proven zero.

Do Muskego homes have lead pipes?

Census estimates put 42% of Muskego homes as built before 1980 (Wisconsin: 57%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Muskego Water Utility's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.

Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.