How hard is the water in Avon Lake, OH?

Tap water hardness
78mg/L
4.6gpg
Moderately hard

Reported by Avon Lake City PWS · March 2025

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

Avon Lake water measures 78 mg/L (4.6 gpg) of hardness, moderately hard by USGS standards. The number comes from Avon Lake City PWS, dated March 2025.

Avon Lake on the hardness scale, with nearby cities
060120180240300360+OH typical 113Oberlin: 50 mg/LOberlin 50Fairview Park: 111 mg/LFairview Park 111Cleveland: 111 mg/LCleveland 111Lakewood: 112 mg/LLakewood 112Avon: 130 mg/LAvon 130North Olmsted: 210 mg/LNorth Olmsted 210North Ridgeville: 220 mg/LNorth Ridgeville 220Elyria: 220 mg/LElyria 220Lorain: 220 mg/LLorain 220Brunswick: 247 mg/LBrunswick 247Avon Lake 78mg/L as calcium carbonate060120180240300360+OH 113Fairview Park: 111 mg/LFairview P. 111Avon: 130 mg/LAvon 130North Olmsted: 210 mg/LNorth Olms. 210North Ridgeville: 220 mg/LNorth Ridg. 220Elyria: 220 mg/LElyria 220Lorain: 220 mg/LLorain 22078 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 78 mg/L, Avon Lake is 35 mg/L below the typical Ohio figure of 113. Of the 10 nearest cities we track, 1 has softer water and 9 have harder. The range nearby runs from 50 mg/L in Oberlin to 247 in Brunswick.

What 78 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 Avon Lake

3 people × 75 gallons a day × 4.6 gpg = 1,026 grains a day. A 24,000-grain unit regenerates about every 23 days.

Size it for your household

EPA record for Avon Lake's water system

Avon Lake City PWS · PWSID OH4700311

No health-based violations since 2016

Serves about 23,659 people from surface water.

Health-based
0
Monitoring or reporting
1
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 Avon Lake water hard?

Somewhat. It measures about 78 mg/L (4.6 grains per gallon), which the USGS classes as moderately hard.

What is the water hardness in Avon Lake in grains per gallon?

About 4.6 gpg. One grain per gallon equals 17.1 mg/L, so 78 mg/L divided by 17.1 gives 4.6.

What size water softener do I need in Avon Lake?

For 3 people using 75 gallons each per day, 4.6 gpg works out to about 1,026 grains a day. A 24,000-grain softener covers that with a regeneration about every 23 days.

Has the Avon Lake water system had EPA violations?

EPA records show no health-based violations for Avon Lake City PWS since 2016. There were also 1 monitoring or reporting violation, which are about late or missing tests and notices.

Nearby cities

All 108 cities in Ohio

Hardness data: TapWaterData US Water Hardness (utility report, March 13, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.