How hard is the water in Middletown, CT?

Tap water hardness
64mg/L
3.8gpg
Moderately hard

Reported by Middletown Water Department · October 2025

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

The water in Middletown carries roughly 64 mg/L of dissolved calcium and magnesium, or 3.8 grains per gallon. That is moderately hard water. The number comes from Middletown Water Department, dated October 2025.

Middletown on the hardness scale, with nearby cities
060120180240300360+CT typical 53Newington: 16 mg/LNewington 16Wethersfield: 16 mg/LWethersfield 16Glastonbury Center: 16 mg/LGlastonbury Center 16East Hartford: 16 mg/LEast Hartford 16Hartford: 16 mg/LHartford 16West Hartford: 16 mg/LWest Hartford 16Northford: 46 mg/LNorthford 46Cheshire Village: 46 mg/LCheshire Village 46North Haven: 46 mg/LNorth Haven 46New Britain: 162 mg/LNew Britain 162Middletown 64mg/L as calcium carbonate060120180240300360+CT 53Newington: 16 mg/LNewington 16Wethersfield: 16 mg/LWethersfie. 16Glastonbury Center: 16 mg/LGlastonbur. 16Northford: 46 mg/LNorthford 46Cheshire Village: 46 mg/LCheshire V. 46New Britain: 162 mg/LNew Britain 16264 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Middletown sits 11 mg/L above the typical Connecticut figure of 53. Of the 10 nearest cities we track, 9 have softer water and 1 has harder. The range nearby runs from 16 mg/L in Newington to 162 in New Britain.

What 64 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 Middletown

3 people × 75 gallons a day × 3.8 gpg = 844 grains a day. A 24,000-grain unit regenerates about every 28 days.

Size it for your household

EPA record for Middletown's water system

Middletown Water Department · PWSID CT0830011

No health-based violations since 2016

Serves about 41,019 people from surface water.

Health-based
0
Monitoring or reporting
5
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 Middletown water hard?

Somewhat. It measures about 64 mg/L (3.8 grains per gallon), which the USGS classes as moderately hard.

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

About 3.8 gpg. One grain per gallon equals 17.1 mg/L, so 64 mg/L divided by 17.1 gives 3.8.

What size water softener do I need in Middletown?

For 3 people using 75 gallons each per day, 3.8 gpg works out to about 844 grains a day. A 24,000-grain softener covers that with a regeneration about every 28 days.

Has the Middletown water system had EPA violations?

EPA records show no health-based violations for Middletown Water Department since 2016. There were also 5 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 51 cities in Connecticut

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