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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
76–100 of 361Collingswood Water Depar
NJ0412001 · 24,500 served
Glassboro Water Department
NJ0806001 · 24,244 served
Little Egg Harbor Twp Mu
NJ1516001 · 24,215 served
Passaic Valley Wc Lodi Wd
NJ0231001 · 24,136 served
Manchester Twp Water Utility - Eastern
NJ1518005 · 23,980 served
Margate City Water Department
NJ0116001 · 23,500 served
Bridgeton City Water Dept
NJ0601001 · 22,770 served
Burlington Twp W Dept
NJ0306001 · 22,594 served
Ventnor City Water & Sewer Utility
NJ0122001 · 22,150 served
Montville Twp Mua
NJ1421003 · 22,000 served
West Deptford Twp Water Dept
NJ0820001 · 22,000 served
Hackettstown Mua
NJ2108001 · 22,000 served
Hamilton Township Mua
NJ0112001 · 21,720 served
Moorestown Water Dept
NJ0322001 · 20,700 served
Lyndhurst Water Department
NJ0232001 · 20,500 served
Elmwood Park Water Dept
NJ0211001 · 20,374 served
Barnegat Twp Water Sewer
NJ1533001 · 20,000 served
Seaside Heights Water De
NJ1526001 · 20,000 served
Beach Haven Water Dept
NJ1503001 · 20,000 served
Belmar Water Dept
NJ1306001 · 20,000 served
Point Pleasant Water Department
NJ1524001 · 19,600 served
Hawthorne Water Department
NJ1604001 · 19,458 served
Maple Shade Water Department
NJ0319001 · 19,400 served
Sparta Twp Water Utility - Lake Mohawk
NJ1918004 · 17,625 served
Medford Twp Dept of Muni
NJ0320001 · 17,272 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.
New Jersey Water FAQs
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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