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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
176–200 of 361Spotswood W Dept
NJ1224001 · 8,300 served
Borough of Clayton
NJ0801001 · 8,179 served
Pitman Water Department
NJ0815001 · 7,896 served
Mount Olive Twp W D Main
NJ1427005 · 7,887 served
Bloomingdale Water Dept
NJ1601001 · 7,742 served
Glen Ridge Water Dept
NJ0708001 · 7,681 served
Butler Water Dept
NJ1403001 · 7,630 served
Keyport Water Dept
NJ1322001 · 7,500 served
Fairfield Water Dept
NJ0707001 · 7,400 served
Hopatcong Water Dept
NJ1912001 · 7,224 served
Rockaway Boro Water Dept
NJ1434001 · 7,066 served
Milltown W Dept
NJ1212001 · 7,000 served
Aberdeen - Cliffwood/cliffwood Beach
NJ1330002 · 6,775 served
Veolia Water Nj Allendale Water System
NJ0201001 · 6,702 served
Nj American Water - Logan
NJ0809002 · 6,650 served
Shore Water Company
NJ1505003 · 6,600 served
Nj American Water - Itc
NJ1427017 · 6,463 served
Harvey Cedars Water Dept
NJ1509001 · 6,360 served
Wharton Water Dept
NJ1439001 · 6,342 served
Tuckerton Water & Sewer Dept
NJ1532002 · 6,285 served
Aqua Nj - Woolwich
NJ0824001 · 6,271 served
Nj American Water - Salem City
NJ1712001 · 6,199 served
Paulsboro Water Department
NJ0814001 · 6,097 served
Awo&m - Picatinny Arsenal
NJ1435003 · 6,011 served
Westville Water Department
NJ0821001 · 6,000 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