Passaic County water hardness

Passaic County is served largely by the Passaic Valley Water Commission's surface supply, with Wayne and a few others running their own wells.

Across the 5 Passaic County municipalities with published figures, hardness averages 4.2 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 PVWC system, Little Falls System, Wayne Township municipal system.

5 of 5 records

Reported hardness for Passaic County municipalities.
mg/LClassSource
Clifton4.781Moderately HardPVWC systemPassaic Valley Water Commission CCR
Little Falls3.764Moderately HardLittle Falls SystemNJ American Water CCR
Passaic4.781Moderately HardPVWC systemPassaic Valley Water Commission CCR
Paterson4.781Moderately HardPVWC systemPassaic Valley Water Commission CCR
Wayne352Slightly HardWayne Township municipal systemWayne Township CCR 2025

Every Passaic 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 Passaic County are Clifton water hardness at 4.7 gpg and Wayne at 3 gpg.