Long Hill, CT water hardness

Tap water hardness
50mg/L
2.9gpg
Soft

Reported by Aquarion Water CO of CT-Main System · October 2025

CT typical
53 mg/L
EPA health violations since 2016
0
Data
Utility report

Long Hill water measures 50 mg/L (2.9 gpg) of hardness, soft by USGS standards. The number comes from Aquarion Water CO of CT-Main System, dated October 2025.

Long Hill on the hardness scale, with nearby cities
060120180240300360+CT typical 53Milford: 46 mg/LMilford 46Ansonia: 46 mg/LAnsonia 46Orange: 46 mg/LOrange 46Derby: 49 mg/LDerby 49Shelton: 52 mg/LShelton 52Daniels Farm: 53 mg/LDaniels Farm 53Trumbull Center: 53 mg/LTrumbull Center 53Bridgeport: 53 mg/LBridgeport 53Staples: 53 mg/LStaples 53Sandy Hook: 53 mg/LSandy Hook 53Long Hill 50mg/L as calcium carbonate060120180240300360+CT 53Milford: 46 mg/LMilford 46Derby: 49 mg/LDerby 49Shelton: 52 mg/LShelton 52Daniels Farm: 53 mg/LDaniels Fa. 53Trumbull Center: 53 mg/LTrumbull C. 53Bridgeport: 53 mg/LBridgeport 5350 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 50 mg/L, Long Hill is close to the typical Connecticut figure of 53 mg/L. Of the 10 nearest cities we track, 4 have softer water and 6 have harder. The range nearby runs from 46 mg/L in Milford to 53 in Daniels Farm.

What 50 mg/L means at home

Soap and shampoo lather with very little product. Kettles and showerheads stay mostly free of white crust.

Some people notice that soap feels slow to rinse off in soft water. That slippery feel is normal and harmless.

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

Nothing, as far as hardness goes. At 50 mg/L a softener would have almost nothing to remove.

Carbon filter

If the water tastes of chlorine, a pitcher or faucet carbon filter takes care of that. It does not change hardness.

EPA record for Long Hill's water system

Aquarion-Eastern Fairfield County · PWSID CT0150011

No health-based violations since 2016

Serves about 351,756 people from surface water.

Health-based
0
Monitoring or reporting
152
Open now
0

TapWaterData ties Long Hill to this system. EPA's service-area records do not name Long Hill, so check the utility printed on your water bill.

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 Long Hill water hard?

No. It measures about 50 mg/L (2.9 grains per gallon), which the USGS classes as soft.

What is the water hardness in Long Hill in grains per gallon?

About 2.9 gpg. One grain per gallon equals 17.1 mg/L, so 50 mg/L divided by 17.1 gives 2.9.

Has the Long Hill water system had EPA violations?

EPA records show no health-based violations for Aquarion-Eastern Fairfield County since 2016. There were also 152 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 8, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.