Tap Water Results

Is Fitchburg, 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 Fitchburg Utility District 1.

4 public water systems serve parts of Fitchburg. The largest, Fitchburg Utility District 1, serves 29,900 people. Your water bill names your system.

Largest system

Fitchburg Utility District 1

29,900 people · Groundwater · EPA ID WI1130231

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: 2.3 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: 0

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.

Fitchburg homes and lead pipes

27%
of homes built before 1980 (Wisconsin 57%, US 50%)
3%
built before 1950 (Wisconsin 23%)
52%
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. Renting? Ask your landlord what the service line is made of, because it's their pipe to replace. How to check your own line.

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

Other water systems serving Fitchburg

  • Fitchburg Utility District 1 South
    350 people · Groundwater · Wisconsin · lists this city
    Not in EPA's PFAS sample
  • Danville Drive Service Area
    150 people · Purchased groundwater · Wisconsin · lists this city
    Not in EPA's PFAS sample
  • Rimrock Road Neighborhood Water System
    135 people · Purchased groundwater · Wisconsin · lists this city
    Not in EPA's PFAS sample

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Madison 7 mi
Madison Water Utility
Madison Water UtilityNone above limits1.8 ppb
Janesville 29 mi
Janesville Water Utility
Janesville Water UtilityNone above limits2.4 ppb
Beloit 38 mi
City of Beloit
City of BeloitNone above limits4.5 ppb
Waukesha 60 mi
Waukesha Water Utility
Waukesha Water UtilityNone above limits0.56 ppb
New Berlin 65 mi
New Berlin Water Utility
New Berlin Water UtilityNone above limits0.33 ppb
Muskego 66 mi
Muskego Water Utility
Muskego Water UtilityNone above limits3.89 ppb
Fitchburg ZIP codes (1)
  • 53711

Questions

Is Fitchburg tap water safe to drink?

Fitchburg Utility District 1 has had no health-based violations 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 Fitchburg, WI?

4 public water systems serve parts of Fitchburg. The largest is Fitchburg Utility District 1 (29,900 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Fitchburg tap water have PFAS?

None detected above EPA's reporting limits. Fitchburg Utility District 1 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 Fitchburg homes have lead pipes?

Census estimates put 27% of Fitchburg 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. Fitchburg Utility District 1'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.