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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
251–275 of 361Ogdensburg W Dept
NJ1916001 · 2,800 served
Borough of Woodbine
NJ0516001 · 2,650 served
Lakehurst Water Dept
NJ1513001 · 2,650 served
Sea Girt Water Dept
NJ1344001 · 2,636 served
Pennington W Dept
NJ1108001 · 2,600 served
Alpha Municipal Water Works
NJ2102001 · 2,530 served
Ancora Psychiatric Hospi
NJ0436001 · 2,506 served
Englishtown Water Dept
NJ1312001 · 2,504 served
Albert C Wagner Youth Co
NJ0307002 · 2,500 served
Nj American Water - Homestead
NJ0318002 · 2,420 served
East Newark W Dept
NJ0902001 · 2,406 served
Wenonah Water Department
NJ0819001 · 2,357 served
Brooklawn Water Departme
NJ0407001 · 2,300 served
Sussex W Dept
NJ1921001 · 2,201 served
Essex Fells Water Dept
NJ0706001 · 2,200 served
Pine Beach Water Dept
NJ1522001 · 2,130 served
Cedar Glen Lakes Water C
NJ1518002 · 2,126 served
Aberdeen- High School/oakshade Area
NJ1330003 · 2,123 served
Hopewell Boro W Dept
NJ1105001 · 2,035 served
New Lisbon Development Ctr
NJ0339001 · 2,014 served
Helmetta Water Dept
NJ1206001 · 2,000 served
Long Beach Twp Wd Holgat
NJ1517002 · 2,000 served
Allentown Water Dept
NJ1302001 · 2,000 served
Veolia Water New Jersey Arlington Hills
NJ1426004 · 1,989 served
Montague Water Co.
NJ1914002 · 1,983 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