How hard is the water in Long Branch, NJ?
Reported by NJ American Water - Coastal North · October 2025
- NJ typical
- 80 mg/L
- EPA health violations since 2016
- 1
- Softener for 3 people
- 24k grain
- Data
- Utility report
Long Branch water measures 64 mg/L (3.7 gpg) of hardness, moderately hard by USGS standards. The number comes from NJ American Water - Coastal North, dated October 2025.
At 64 mg/L, Long Branch is 16 mg/L below the typical New Jersey figure of 80. None of the 10 nearest cities we track has harder water. The range nearby runs from 61 mg/L in Belmar to 64 in West Long Branch.
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.
3 people × 75 gallons a day × 3.7 gpg = 839 grains a day. A 24,000-grain unit regenerates about every 28 days.
EPA record for Long Branch's water system
1 health-based violation since 2016
Serves about 377,613 people from surface water.
- Health-based
- 1
- Monitoring or reporting
- 2
- Open now
- 0
TapWaterData ties Long Branch to this system. EPA's service-area records do not name Long Branch, so check the utility printed on your water bill.
| Contaminant or rule | Violations | Period | Status |
|---|---|---|---|
| Surface Water Treatment Rulefiltration and disinfection | 1 | 2019 | Resolved |
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 Branch water hard?
Somewhat. It measures about 64 mg/L (3.7 grains per gallon), which the USGS classes as moderately hard.
What is the water hardness in Long Branch in grains per gallon?
About 3.7 gpg. One grain per gallon equals 17.1 mg/L, so 64 mg/L divided by 17.1 gives 3.7.
What size water softener do I need in Long Branch?
For 3 people using 75 gallons each per day, 3.7 gpg works out to about 839 grains a day. A 24,000-grain softener covers that with a regeneration about every 28 days.
Has the Long Branch water system had EPA violations?
EPA records show 1 health-based violation for NJ American Water - Coastal North since 2016, involving Surface Water Treatment Rule. There were also 2 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- West Long Branch64 mg/LModerately hard
- Oceanport64 mg/LModerately hard
- Eatontown64 mg/LModerately hard
- Little Silver64 mg/LModerately hard
- Rumson64 mg/LModerately hard
- Asbury Park64 mg/LModerately hard
- Fair Haven64 mg/LModerately hard
- Tinton Falls64 mg/LModerately hard
- Lincroft64 mg/LModerately hard
- Belmar61 mg/LModerately hard
Hardness data: TapWaterData US Water Hardness (utility report, October 7, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.