Monmouth County water hardness

Monmouth County's shore towns are grouped into large NJ American Water service systems — Coastal North and Shorelands among them — that share one published hardness reading across dozens of municipalities.

Across the 39 Monmouth County municipalities with published figures, hardness averages 4.8 grains per gallon — moderately hard water on the USGS scale. Because most towns here buy treated water rather than produce it, neighbouring municipalities on the same system report the same number; the systems represented below are Coastal North Service System, Deep Run Service System, Shorelands Service System, Union Beach System.

39 of 39 records

Reported hardness for Monmouth County municipalities.
		mg/L	Class		Source
Aberdeen	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Allenhurst Borough	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Asbury Park City	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Atlantic Highlands	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Avon	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Belmar	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Bradley Beach	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Colts Neck	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Cream Ridge	5.6	96	Moderately Hard	Deep Run Service System	NJ American Water CCR
Deal	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Eatontown	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Elberon	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Fair Haven	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Hazlet	4.3	74	Moderately Hard	Shorelands Service System	NJ American Water CCR
Highlands	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Holmdel	4.3	74	Moderately Hard	Shorelands Service System	NJ American Water CCR
Howell	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Interlaken	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Keansburg	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Lake Como	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Little Silver	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Loch Arbour Village	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Long Branch City	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Matawan	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Middletown	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Monmouth Beach	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Neptune City	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Neptune Township	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Ocean Grove	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Ocean Township	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Oceanport	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Rumson	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Sea Bright	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Shrewsbury	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Shrewsbury Township	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Tinton Falls	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
Union Beach	5.1	88	Moderately Hard	Union Beach System	NJ American Water CCR
Wanamassa	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR
West Long Branch	4.8	82	Moderately Hard	Coastal North Service System	NJ American Water CCR

Every Monmouth County town page

Each municipality has its own page with the reported figure, the system that supplies it, what the level means in practice locally, and the report the number was read from.

The extremes in Monmouth County are Cream Ridge water hardness at 5.6 gpg and Holmdel at 4.3 gpg.