Important: A county is never one water system. These guides point you to the NJDEP Drinking Water Viewer, major verified utilities, and local resources — they do not state a single result for the whole county.
Bergen County
Water-system finder and local resources for Bergen County.
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Essex County
Water-system finder and local resources for Essex County.
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Middlesex County
Water-system finder and local resources for Middlesex County.
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Monmouth County
Water-system finder and local resources for Monmouth County.
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Ocean County
Water-system finder and local resources for Ocean County.
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Mercer County
Water-system finder and local resources for Mercer County.
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Atlantic County
Water-system finder and local resources for Atlantic County.
View guide →Burlington County
Water-system finder and local resources for Burlington County.
View guide →Camden County
Water-system finder and local resources for Camden County.
View guide →Cape May County
Water-system finder and local resources for Cape May County.
View guide →Gloucester County
Water-system finder and local resources for Gloucester County.
View guide →Hunterdon County
Water-system finder and local resources for Hunterdon County.
View guide →Passaic County
Water-system finder and local resources for Passaic County.
View guide →Salem County
Water-system finder and local resources for Salem County.
View guide →Somerset County
Water-system finder and local resources for Somerset County.
View guide →Sussex County
Water-system finder and local resources for Sussex County.
View guide →Union County
Water-system finder and local resources for Union County.
View guide →Warren County
Water-system finder and local resources for Warren County.
View guide →Cumberland County
Water-system finder and local resources for Cumberland County.
View guide →Hudson County
Water-system finder and local resources for Hudson County.
View guide →Morris County
Water-system finder and local resources for Morris County.
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All 21 New Jersey counties are represented in the county-to-municipality mapping. Use the statewide Find Your Water System and Private Wells guides to confirm your exact service situation.
This page provides general educational information and is not regulatory advice. NJ Water Quality is an independent resource and is not affiliated with any county or municipal government.