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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
351–361 of 361Saddle River Water Utility
NJ0258001 · 600 served
Aqua Nj - Tranquility Springs
NJ1908001 · 599 served
Nj American Water - Vincentown
NJ0333004 · 598 served
Mt Olive Twp Tinc Farm
NJ1427015 · 597 served
Aqua Nj - Spartan Village
NJ0326008 · 594 served
Carol Lynn Resort, Inc
NJ0516003 · 550 served
Saint Pauls Abbey
NJ1902346 · 530 served
Aqua Nj - Vernon
NJ1922008 · 515 served
Pemberton Twp Water - New Lisbon
NJ0329001 · 500 served
Gateway Nra Sandy Hook
NJ1331001 · 500 served
Delaware Township Mua
NJ1007001 · 500 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