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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
126–150 of 361Cedar Grove Water Dept
NJ0704001 · 12,900 served
Jbmdl-dix Main System
NJ0325001 · 12,765 served
Oakland Water Dept
NJ0242001 · 12,754 served
Mantua Township Mua
NJ0810004 · 12,600 served
Red Bank Water Dept
NJ1340001 · 12,520 served
Clinton Water Dept
NJ1005001 · 12,500 served
Gloucester City W Dept
NJ0414001 · 12,460 served
Lower Twp Mua
NJ0505002 · 12,416 served
Pemberton Twp Dept Main
NJ0329004 · 12,378 served
Jbmdl - Mcguire Afb
NJ0326006 · 12,227 served
Hammonton Water Dept
NJ0113001 · 12,153 served
Aqua Nj - Eastern Division
NJ1505002 · 12,000 served
Point Pleasant Beach Water Department
NJ1525001 · 12,000 served
Manchester Utilities Authority
NJ1603001 · 12,000 served
Haddon Twp Water Departm
NJ0416001 · 11,938 served
Nj American Water - Roxbury
NJ1436002 · 11,793 served
Berkeley Twp Mua
NJ1505004 · 11,792 served
Wallington Water Dept
NJ0265001 · 11,583 served
Pompton Lakes Mua
NJ1609001 · 11,435 served
East Hanover Twp Water Dept
NJ1410001 · 11,393 served
Spring Lake Water Department
NJ1348001 · 11,270 served
Nj American Water - Little Falls
NJ1605001 · 11,247 served
Florence Twp W Dept
NJ0315001 · 11,214 served
Freehold Borough Water D
NJ1315001 · 11,029 served
Lincoln Park Water Dept
NJ1416001 · 11,000 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