How hard is the water in Haddonfield, NJ?

Tap water hardness
82mg/L
4.8gpg
Moderately hard

Reported by NJ American Water - Western · September 2025

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

Tap water in Haddonfield has about 82 mg/L of hardness, which is 4.8 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from NJ American Water - Western, dated September 2025.

Haddonfield on the hardness scale, with nearby cities
060120180240300360+NJ typical 80Cherry Hill Mall: 78 mg/LCherry Hill Mall 78Ashland: 82 mg/LAshland 82Haddon Heights: 82 mg/LHaddon Heights 82Barrington: 82 mg/LBarrington 82Audubon: 82 mg/LAudubon 82Ellisburg: 82 mg/LEllisburg 82Kingston Estates: 82 mg/LKingston Estates 82Somerdale: 82 mg/LSomerdale 82Collingswood: 97 mg/LCollingswood 97Westmont: 101 mg/LWestmont 101Haddonfield 82mg/L as calcium carbonate060120180240300360+NJ 80Ashland: 82 mg/LAshland 82Haddon Heights: 82 mg/LHaddon Hei. 82Barrington: 82 mg/LBarrington 82Audubon: 82 mg/LAudubon 82Ellisburg: 82 mg/LEllisburg 82Westmont: 101 mg/LWestmont 10182 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 82 mg/L, Haddonfield is close to the typical New Jersey figure of 80 mg/L. Of the 10 nearest cities we track, 1 has softer water and 2 have harder. The range nearby runs from 78 mg/L in Cherry Hill Mall to 101 in Westmont.

What 82 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 Haddonfield

3 people × 75 gallons a day × 4.8 gpg = 1,073 grains a day. A 24,000-grain unit regenerates about every 22 days.

Size it for your household

EPA record for Haddonfield's water system

NJ American Water - Western · PWSID NJ0327001

No health-based violations since 2016

Serves about 274,291 people from surface water.

Health-based
0
Monitoring or reporting
10
Open now
0

TapWaterData ties Haddonfield to this system. EPA's service-area records do not name Haddonfield, 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 Haddonfield water hard?

Somewhat. It measures about 82 mg/L (4.8 grains per gallon), which the USGS classes as moderately hard.

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

About 4.8 gpg. One grain per gallon equals 17.1 mg/L, so 82 mg/L divided by 17.1 gives 4.8.

What size water softener do I need in Haddonfield?

For 3 people using 75 gallons each per day, 4.8 gpg works out to about 1,073 grains a day. A 24,000-grain softener covers that with a regeneration about every 22 days.

Has the Haddonfield water system had EPA violations?

EPA records show no health-based violations for NJ American Water - Western since 2016. There were also 10 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 227 cities in New Jersey

Hardness data: TapWaterData US Water Hardness (utility report, September 22, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.