Olympian Water Testing™

Essex County’s drinking water story begins with Newark’s early aqueducts and the move to protect upstream sources. Newark formalized its system in the 1800s and later secured the Pequannock Watershed, laying the foundation for modern municipal supply.

Suburbs like Glen Ridge illustrate how local networks evolved: historic contracts shifted from Newark’s watershed to deliveries via Montclair, reflecting drought-era interconnections and regional capacity-building (Glen Ridge Historical Society). Beneath this infrastructure, the county sits on portions of New Jersey’s major aquifers, the geologic engines behind thousands of private wells statewide.

Private well stewardship remains vital. Roughly one in eight New Jerseyans relies on a private well, and sellers/landlords must follow the state’s testing rules. While Essex is largely municipal, nearby Sussex County underscores the region’s mixed service model: Andover Borough’s water department and surrounding private wells exemplify “well water systems in Andover” and ongoing “municipal water development in Sussex County.” Local researchers and utilities often reference “Andover NJ water supply history” to compare rural–suburban approaches to sourcing and treatment.

Taken together, Essex County’s system blends historic surface-water investments (Pequannock and Wanaque) with groundwater realities shaped by geology and state policy—an interplay that still defines planning, resilience, and public health across North Jersey.