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New Jersey Water Quality
361
Utilities in database
8.9M
Residents served
20%
On private wells
3
Key contaminants tracked
Drinking Water in New Jersey
New Jersey has 361 community water systems serving approximately 8.9 million residents. Primary water sources include groundwater. The most commonly reported contaminants include disinfection byproducts, lead, arsenic. 20% of New Jersey residents rely on private wells. DEP holds primary enforcement authority under the Safe Drinking Water Act.
Utilities in New Jersey
201–225 of 361Woodland Park Water Department
NJ1616001 · 6,000 served
North Caldwell Water Dep
NJ0715001 · 6,000 served
Nj American Water - Cape May Court House
NJ0506010 · 5,625 served
Veolia Water New Jersey Vernon Valley
NJ1922026 · 5,517 served
Franklin Bd of Public Works
NJ1906002 · 5,500 served
Allamuchy Twp Water & Sewer
NJ2101001 · 5,423 served
Hightstown Water Department
NJ1104001 · 5,400 served
Roseland Water Dept
NJ0718001 · 5,300 served
Roxbury Twp W Dept-shore
NJ1436003 · 5,153 served
Veolia Water New Jersey Franklin Lakes
NJ0220001 · 5,038 served
Clementon Water Department
NJ0411001 · 5,000 served
Avon by the Sea Water De
NJ1305001 · 5,000 served
Mt Olive Villages Water
NJ1427001 · 5,000 served
Borough of Springlake Heights
NJ1349001 · 5,000 served
Washington Twp Mua-schoo
NJ1438004 · 4,986 served
Pinelands Water Co
NJ0333001 · 4,926 served
Greenwich Twp W Dept
NJ0807001 · 4,921 served
Buena Borough Mua
NJ0104003 · 4,880 served
Brielle Water Dept
NJ1308001 · 4,800 served
Flemington Water Department
NJ1009001 · 4,581 served
Jefferson Twp W U Milton Sys
NJ1414003 · 4,500 served
Roxbury Twp W Dept-sky V
NJ1436004 · 4,478 served
Woodstown Water Department
NJ1715001 · 4,455 served
West Cape May Water Dept
NJ0512001 · 4,427 served
Atlantic Highlands Water
NJ1304001 · 4,385 served
Key Contaminant Concerns in New Jersey
Lead
Lead is a naturally occurring heavy metal that was widely used in plumbing infrastructure until it was banned for new installations in 1986. An estimated 9.2 million lead service lines still connect homes to public water mains across the United States, along with millions of homes with lead solder in their internal plumbing.
DBPs
When utilities add chlorine to water to kill pathogens, it reacts with dissolved organic matter — leaves, algae, soil — to produce disinfection byproducts (DBPs). Over 600 DBPs have been identified. The EPA regulates two groups: total trihalomethanes (TTHMs, including chloroform) and haloacetic acids (HAA5). DBP levels tend to be highest in surface water systems and in warm months when organic matter is elevated.
Arsenic
Arsenic (As) occurs naturally in rock and soil, dissolving into groundwater through natural weathering processes. Inorganic arsenic — the form found in drinking water — is a known human carcinogen. The western United States has particularly arsenic-rich geological formations, but elevated levels have been found in 48 states. Arsenic is tasteless and odorless.
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Data source: Utility data from EPA SDWIS. 361 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-18