State Hub
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
276–300 of 361Mount Arlington Boro Dpw Main
NJ1426005 · 1,978 served
Hardyston Twp Mua
NJ1911006 · 1,963 served
Kinnelon Water Dept
NJ1415002 · 1,938 served
Fairton Federal Correctional
NJ0605004 · 1,841 served
Pemberton Borough Water
NJ0328001 · 1,771 served
Island Heights Water Dep
NJ1510001 · 1,750 served
Glen Gardner W Dept
NJ1012001 · 1,705 served
Nj State Prison Bayside
NJ0609001 · 1,679 served
Sparta Twp Water Utility -- Highlands
NJ1918003 · 1,618 served
Newfield Water Department
NJ0813001 · 1,616 served
United Mobile Homes of Vineland
NJ0614005 · 1,600 served
Winfield Mutual Housing
NJ2021001 · 1,600 served
Veolia Water Nj - Olde Milford Est
NJ1615016 · 1,577 served
Branchville W Dept
NJ1903001 · 1,500 served
Farmingdale Water Dept
NJ1314001 · 1,500 served
Pinewood Estates-brightn
NJ1533002 · 1,493 served
Pequannock Twp Wd-cedar Crest
NJ1431002 · 1,463 served
Milford W Dept
NJ1020001 · 1,453 served
Veolia Water Nj Bald Eagle Commons
NJ1615020 · 1,444 served
Forest Lakes Water
NJ1904003 · 1,410 served
Hampton Borough Water Depart
NJ1013001 · 1,401 served
Elmer Boro W Dept
NJ1702001 · 1,385 served
Nj American Water - Frenchtown
NJ1011001 · 1,373 served
Cedar Glen West Water Co
NJ1518003 · 1,300 served
Harding Woods Mhp
NJ1710001 · 1,276 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