Middlesex County water hardness

Middlesex County blends Middlesex Water Company supply, Raritan River surface water and municipal wells, so figures vary town to town.

Across the 1 Middlesex County municipalities with published figures, hardness averages 4.6 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 Middlesex Water Company system.

1 of 1 records

Reported hardness for Middlesex County municipalities.
mg/LClassSource
Perth Amboy4.679Moderately HardMiddlesex Water Company systemMiddlesex Water Company CCR 2025

Every Middlesex 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 Middlesex County are Perth Amboy water hardness at 4.6 gpg.