Williamstown, NJ water hardness

Tap water hardness
22mg/L
1.3gpg
Soft

Reported by Monroe Municipal Utilities Authority · February 2025

NJ typical
80 mg/L
EPA health violations since 2016
0
Data
Utility report

Tap water in Williamstown has about 22 mg/L of hardness, which is 1.3 grains per gallon. On the USGS scale that counts as soft. The number comes from Monroe Municipal Utilities Authority, dated February 2025.

Williamstown on the hardness scale, with nearby cities
060120180240300360+NJ typical 80Glassboro: 37 mg/LGlassboro 37Sicklerville: 43 mg/LSicklerville 43Berlin: 58 mg/LBerlin 58Clementon: 66 mg/LClementon 66Lindenwold: 82 mg/LLindenwold 82Stratford: 82 mg/LStratford 82Echelon: 82 mg/LEchelon 82Somerdale: 82 mg/LSomerdale 82Glendora: 82 mg/LGlendora 82Runnemede: 82 mg/LRunnemede 82Williamstown 22mg/L as calcium carbonate060120180240300360+NJ 80Glassboro: 37 mg/LGlassboro 37Sicklerville: 43 mg/LSicklervil. 43Berlin: 58 mg/LBerlin 58Clementon: 66 mg/LClementon 66Lindenwold: 82 mg/LLindenwold 82Stratford: 82 mg/LStratford 8222 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Williamstown sits 58 mg/L below the typical New Jersey figure of 80. None of the 10 nearest cities we track has softer water. The range nearby runs from 37 mg/L in Glassboro to 82 in Lindenwold.

What 22 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 22 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 Williamstown's water system

Monroe Municipal Utilities Authority · PWSID NJ0811002

No health-based violations since 2016

Serves about 26,179 people from surface water.

Health-based
0
Monitoring or reporting
18
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 Williamstown water hard?

No. It measures about 22 mg/L (1.3 grains per gallon), which the USGS classes as soft.

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

About 1.3 gpg. One grain per gallon equals 17.1 mg/L, so 22 mg/L divided by 17.1 gives 1.3.

Has the Williamstown water system had EPA violations?

EPA records show no health-based violations for Monroe Municipal Utilities Authority since 2016. There were also 18 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, February 25, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.