Is Neenah, WI tap water safe?

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

No federal limits exceeded in EPA data for Neenah Waterworks.

3 public water systems serve parts of Neenah. The largest, Neenah Waterworks, serves 27,506 people. Your water bill names your system.

Largest system

Neenah Waterworks

27,506 people · Surface water · EPA ID WI4710348

PFAS	Highest average	Limit	Status
PFOA Not detected	–	4 ppt	Not detected
PFOS Not detected	–	4 ppt	Not detected
PFHxS Not detected	–	10 ppt	Not detected
PFNA Not detected	–	10 ppt	Not detected
HFPO-DA (GenX) Not detected	–	10 ppt	Not 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: 10 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.

Neenah homes and lead pipes

64%

of homes built before 1980 (Wisconsin 57%, US 50%)

23%

built before 1950 (Wisconsin 23%)

34%

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 Neenah city (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Neenah

Fox Crossing Utilities West
14,000 people · Groundwater · Wisconsin · lists this city
No PFAS above limitsAlso: 1 health-based violation since 2016
Fox Crossing Utilities East
10,927 people · Purchased surface water · Wisconsin · lists this city
No PFAS above limitsAlso: 1 health-based violation since 2016

How nearby cities compare

City	Main water system	PFAS	Lead (90th pct.)
Appleton 9 mi Appleton Waterworks	Appleton Waterworks	None above limits	1.3 ppb
Oshkosh 11 mi Oshkosh Waterworks	Oshkosh Waterworks	None above limits	6.1 ppb
De Pere 27 mi De Pere Waterworks Service Area 1	De Pere Waterworks Service Area 1	None above limits	0.66 ppb
Fond du Lac 27 mi Fond du Lac Waterworks	Fond du Lac Waterworks	None above limits	6.1 ppb
Green Bay 34 mi Green Bay Waterworks	Green Bay Waterworks	None above limits	2.5 ppb
Manitowoc 40 mi Manitowoc Waterworks	Manitowoc Waterworks	None above limits	7.7 ppb

Neenah ZIP codes (1)

54956

Questions

Is Neenah tap water safe to drink?

Neenah 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 Neenah, WI?

3 public water systems serve parts of Neenah. The largest is Neenah Waterworks (27,506 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Neenah tap water have PFAS?

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

Census estimates put 64% of Neenah 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. Neenah 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.