How hard is the water in Hudson, OH?

Tap water hardness
104mg/L
6.1gpg
Moderately hard

Reported by Hudson City PWS · November 2024

OH typical
113 mg/L
EPA health violations since 2016
1
Softener for 3 people
24k grain
Data
Utility report

Tap water in Hudson has about 104 mg/L of hardness, which is 6.1 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from Hudson City PWS, dated November 2024.

Hudson on the hardness scale, with nearby cities
060120180240300360+OH typical 113Cuyahoga Falls: 116 mg/LCuyahoga Falls 116Akron: 116 mg/LAkron 116Portage Lakes: 116 mg/LPortage Lakes 116Reminderville: 117 mg/LReminderville 117Aurora: 117 mg/LAurora 117Bainbridge: 117 mg/LBainbridge 117Kent: 188 mg/LKent 188Solon: 210 mg/LSolon 210Stow: 220 mg/LStow 220Barberton: 220 mg/LBarberton 220Hudson 104mg/L as calcium carbonate060120180240300360+OH 113Cuyahoga Falls: 116 mg/LCuyahoga F. 116Reminderville: 117 mg/LRemindervi. 117Aurora: 117 mg/LAurora 117Kent: 188 mg/LKent 188Solon: 210 mg/LSolon 210Stow: 220 mg/LStow 220104 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Hudson sits close to the typical Ohio figure of 113 mg/L. None of the 10 nearest cities we track has softer water. The range nearby runs from 116 mg/L in Cuyahoga Falls to 220 in Stow.

What 104 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 Hudson

3 people × 75 gallons a day × 6.1 gpg = 1,368 grains a day. A 24,000-grain unit regenerates about every 17 days.

Size it for your household

EPA record for Hudson's water system

Hudson City PWS · PWSID OH7701612

1 health-based violation since 2016

Serves about 8,385 people from groundwater.

Health-based
1
Monitoring or reporting
2
Open now
1
20162017201820192020202120222023202420252026Total Coliform Rule'16'18'20'22'24'26Total Coliform Rule
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Total Coliform Rulebacteria12025Resolved

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 Hudson water hard?

Somewhat. It measures about 104 mg/L (6.1 grains per gallon), which the USGS classes as moderately hard.

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

About 6.1 gpg. One grain per gallon equals 17.1 mg/L, so 104 mg/L divided by 17.1 gives 6.1.

What size water softener do I need in Hudson?

For 3 people using 75 gallons each per day, 6.1 gpg works out to about 1,368 grains a day. A 24,000-grain softener covers that with a regeneration about every 17 days.

Has the Hudson water system had EPA violations?

EPA records show 1 health-based violation for Hudson City PWS since 2016, involving Total Coliform Rule. There were also 2 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 108 cities in Ohio

Hardness data: TapWaterData US Water Hardness (utility report, November 9, 2024), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.