How hard is the water in Neenah, WI?

Tap water hardness
67mg/L
3.9gpg
Moderately hard

Reported by Neenah Waterworks · November 2024

WI typical
170 mg/L
EPA health violations since 2016
0
Softener for 3 people
24k grain
Data
Utility report

The water in Neenah carries roughly 67 mg/L of dissolved calcium and magnesium, or 3.9 grains per gallon. That is moderately hard water. The number comes from Neenah Waterworks, dated November 2024.

Neenah on the hardness scale, with nearby cities
060120180240300360+WI typical 170Kimberly: 73 mg/LKimberly 73Appleton: 81 mg/LAppleton 81Little Chute: 87 mg/LLittle Chute 87Oshkosh: 145 mg/LOshkosh 145Greenville: 152 mg/LGreenville 152Fox Crossing: 166 mg/LFox Crossing 166Menasha: 166 mg/LMenasha 166De Pere: 194 mg/LDe Pere 194Berlin: 204 mg/LBerlin 204New London: 279 mg/LNew London 279Neenah 67mg/L as calcium carbonate060120180240300360+WI 170Kimberly: 73 mg/LKimberly 73Appleton: 81 mg/LAppleton 81Oshkosh: 145 mg/LOshkosh 145Greenville: 152 mg/LGreenville 152Fox Crossing: 166 mg/LFox Crossi. 166Menasha: 166 mg/LMenasha 16667 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

At 67 mg/L, Neenah is 103 mg/L below the typical Wisconsin figure of 170. None of the 10 nearest cities we track has softer water. The range nearby runs from 73 mg/L in Kimberly to 279 in New London.

What 67 mg/L means at home

You may see faint white spots on glasses and shower doors after the water dries.

Scale builds up slowly. A kettle or coffee maker needs descaling now and then, maybe every few months.

Hardness is not a health problem, and EPA sets no limit for it. It is a matter of scale and soap.

What to do about it

Optional. Plenty of households at this level live with it and descale the kettle now and then.

Water softener

Worth a look if spots on glass bother you, or if your tankless water heater manual asks for softer water.

Carbon filter

Improves taste and removes chlorine. It leaves calcium and magnesium in place.

Softener size for Neenah

3 people × 75 gallons a day × 3.9 gpg = 886 grains a day. A 24,000-grain unit regenerates about every 27 days.

Size it for your household

EPA record for Neenah's water system

Neenah Waterworks · PWSID WI4710348

No health-based violations since 2016

Serves about 27,506 people from surface water.

Health-based
0
Monitoring or reporting
0
Open now
0

Health-based means a contaminant above its legal limit or a missed treatment step. Monitoring and reporting violations are late or missing tests and notices. Source: EPA ECHO, 2026Q3 export, violations with periods starting 2016 or later. Full EPA record.

Questions

Is Neenah water hard?

Somewhat. It measures about 67 mg/L (3.9 grains per gallon), which the USGS classes as moderately hard.

What is the water hardness in Neenah in grains per gallon?

About 3.9 gpg. One grain per gallon equals 17.1 mg/L, so 67 mg/L divided by 17.1 gives 3.9.

What size water softener do I need in Neenah?

For 3 people using 75 gallons each per day, 3.9 gpg works out to about 886 grains a day. A 24,000-grain softener covers that with a regeneration about every 27 days.

Has the Neenah water system had EPA violations?

EPA records show no health-based violations for Neenah Waterworks since 2016.

Nearby cities

All 112 cities in Wisconsin

Hardness data: TapWaterData US Water Hardness (utility report, November 20, 2024), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.