How hard is the water in Manasquan, NJ?

Tap water hardness
77mg/L
4.5gpg
Moderately hard

Reported by Manasquan Water Departme · August 2024

NJ typical
80 mg/L
EPA health violations since 2016
1
Softener for 3 people
24k grain
Data
Utility report

Tap water in Manasquan has about 77 mg/L of hardness, which is 4.5 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from Manasquan Water Departme, dated August 2024.

Manasquan on the hardness scale, with nearby cities
060120180240300360+NJ typical 80Toms River: 13 mg/LToms River 13Belmar: 61 mg/LBelmar 61Asbury Park: 64 mg/LAsbury Park 64Lakewood: 64 mg/LLakewood 64Tinton Falls: 64 mg/LTinton Falls 64West Long Branch: 64 mg/LWest Long Branch 64Eatontown: 64 mg/LEatontown 64Long Branch: 64 mg/LLong Branch 64Point Pleasant: 65 mg/LPoint Pleasant 65Ramtown: 84 mg/LRamtown 84Manasquan 77mg/L as calcium carbonate060120180240300360+NJ 80Belmar: 61 mg/LBelmar 61Asbury Park: 64 mg/LAsbury Park 64Lakewood: 64 mg/LLakewood 64Tinton Falls: 64 mg/LTinton Fal. 64Point Pleasant: 65 mg/LPoint Plea. 65Ramtown: 84 mg/LRamtown 8477 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Manasquan sits close to the typical New Jersey figure of 80 mg/L. Of the 10 nearest cities we track, 9 have softer water and 1 has harder. The range nearby runs from 13 mg/L in Toms River to 84 in Ramtown.

What 77 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 Manasquan

3 people × 75 gallons a day × 4.5 gpg = 1,010 grains a day. A 24,000-grain unit regenerates about every 23 days.

Size it for your household

EPA record for Manasquan's water system

Manasquan Water Departme · PWSID NJ1327001

1 health-based violation since 2016

Serves about 14,000 people from groundwater.

Health-based
1
Monitoring or reporting
14
Open now
0

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

20162017201820192020202120222023202420252026Lead and Copper Rule'16'18'20'22'24'26Lead and Copper Rule
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 sampling12022Resolved

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 Manasquan water hard?

Somewhat. It measures about 77 mg/L (4.5 grains per gallon), which the USGS classes as moderately hard.

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

About 4.5 gpg. One grain per gallon equals 17.1 mg/L, so 77 mg/L divided by 17.1 gives 4.5.

What size water softener do I need in Manasquan?

For 3 people using 75 gallons each per day, 4.5 gpg works out to about 1,010 grains a day. A 24,000-grain softener covers that with a regeneration about every 23 days.

Has the Manasquan water system had EPA violations?

EPA records show 1 health-based violation for Manasquan Water Departme since 2016, involving Lead and Copper Rule. There were also 14 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, August 12, 2024), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.