Tap Water Results

Is Manitowoc, 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 Manitowoc Waterworks.

3 public water systems serve parts of Manitowoc. The largest, Manitowoc Waterworks, serves 34,500 people. Your water bill names your system.

Largest system

Manitowoc Waterworks

34,500 people · Surface water · EPA ID WI4360364

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: 7.7 ppb at the 90th percentile (Sep 2025, 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.

Manitowoc homes and lead pipes

71%
of homes built before 1980 (Wisconsin 57%, US 50%)
39%
built before 1950 (Wisconsin 23%)
32%
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 Manitowoc city (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Manitowoc

  • Holy Family Convent Water System
    195 people · Groundwater · Wisconsin · lists this city
    Not in EPA's PFAS sample
  • Chiara Convent Water System
    40 people · Groundwater · Wisconsin · lists this city
    Not in EPA's PFAS sample

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Sheboygan 25 mi
Sheboygan Water Utilities
Sheboygan Water UtilitiesNone above limits2.2 ppb
De Pere 30 mi
De Pere Waterworks Service Area 1
De Pere Waterworks Service Area 1None above limits0.66 ppb
Green Bay 33 mi
Green Bay Waterworks
Green Bay WaterworksNone above limits2.5 ppb
Appleton 37 mi
Appleton Waterworks
Appleton WaterworksNone above limits1.3 ppb
Neenah 40 mi
Neenah Waterworks
Neenah WaterworksNone above limits10 ppb
Fond du Lac 44 mi
Fond du Lac Waterworks
Fond du Lac WaterworksNone above limits6.1 ppb
Manitowoc ZIP codes (1)
  • 54220

Questions

Is Manitowoc tap water safe to drink?

Manitowoc Waterworks 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 Manitowoc, WI?

3 public water systems serve parts of Manitowoc. The largest is Manitowoc Waterworks (34,500 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Manitowoc tap water have PFAS?

None detected above EPA's reporting limits. Manitowoc Waterworks 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 Manitowoc homes have lead pipes?

Census estimates put 71% of Manitowoc 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. Manitowoc Waterworks'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.