Harrison, NJ water hardness

Tap water hardness
37mg/L
2.2gpg
Soft

Reported by Newark Water Department · October 2025

NJ typical
80 mg/L
EPA health violations since 2016
20
Data
Utility report

Harrison water measures 37 mg/L (2.2 gpg) of hardness, soft by USGS standards. The number comes from Newark Water Department, dated October 2025.

Harrison on the hardness scale, with nearby cities
060120180240300360+NJ typical 80Newark: 37 mg/LNewark 37Bayonne: 39 mg/LBayonne 39Watsessing: 43 mg/LWatsessing 43Elizabeth: 54 mg/LElizabeth 54Jersey City: 73 mg/LJersey City 73Glen Ridge: 90 mg/LGlen Ridge 90Secaucus: 96 mg/LSecaucus 96Rutherford: 96 mg/LRutherford 96Kearny: 106 mg/LKearny 106East Orange: 171 mg/LEast Orange 171Harrison 37mg/L as calcium carbonate060120180240300360+NJ 80Newark: 37 mg/LNewark 37Watsessing: 43 mg/LWatsessing 43Jersey City: 73 mg/LJersey City 73Glen Ridge: 90 mg/LGlen Ridge 90Kearny: 106 mg/LKearny 106East Orange: 171 mg/LEast Orange 17137 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 37 mg/L, Harrison is 43 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 Newark to 171 in East Orange.

What 37 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 37 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 Harrison's water system

Newark Water Department · PWSID NJ0714001

20 health-based violations since 2016

Serves about 294,274 people from surface water.

Health-based
20
Monitoring or reporting
7
Open now
0

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

20162017201820192020202120222023202420252026Lead and Copper RuleSurface Water Treatment RuleHaloacetic acids (HAA5)Total trihalomethanes (TTHM)'16'18'20'22'24'26Lead and Copper RuleSurface Water Treatment RuleHaloacetic acids (HAA5)Total trihalomethanes (TTHM)
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Lead and Copper Rulecorrosion control and lead sampling32018–2022Resolved
Surface Water Treatment Rulefiltration and disinfection62016–2020Resolved
Haloacetic acids (HAA5)a disinfection byproduct72018–2020Resolved
Total trihalomethanes (TTHM)a disinfection byproduct42016–2019Resolved

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 Harrison water hard?

No. It measures about 37 mg/L (2.2 grains per gallon), which the USGS classes as soft.

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

About 2.2 gpg. One grain per gallon equals 17.1 mg/L, so 37 mg/L divided by 17.1 gives 2.2.

Has the Harrison water system had EPA violations?

EPA records show 20 health-based violations for Newark Water Department since 2016, involving Lead and Copper Rule, Surface Water Treatment Rule, Haloacetic acids (HAA5). There were also 7 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, October 5, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.