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
101–125 of 361South Orange Water Department
NJ0719001 · 16,964 served
Park Ridge Water Dept
NJ0247001 · 16,466 served
South River W Dept
NJ1223001 · 16,000 served
Denville Twp Water Dept
NJ1408001 · 15,881 served
Bordentown Water Departm
NJ0303001 · 15,821 served
Madison Water Dept
NJ1417001 · 15,820 served
Sea Isle City Water Department
NJ0509001 · 15,800 served
Manchester Twp Water Utility - Western
NJ1518004 · 15,613 served
Ocean Twp Dept of Utilities
NJ1520001 · 15,419 served
Pvwc-north Arlington
NJ0239001 · 15,392 served
Ramsey Water Dept
NJ0248001 · 15,207 served
Ship Bottom Water Depart
NJ1528001 · 15,000 served
Seaside Park Water Dept
NJ1527001 · 15,000 served
Randolph Twp Public Works Dept
NJ1432003 · 14,820 served
Brigantine Water Department
NJ0103001 · 14,450 served
Harrison W Dept
NJ0904001 · 14,425 served
Nj American Water - Penns Grove
NJ1707001 · 14,406 served
Pequannock Twp Water Department
NJ1431001 · 14,010 served
Highland Park W Dept
NJ1207001 · 14,000 served
Rockaway Twp Water Dept
NJ1435002 · 14,000 served
Manasquan Water Departme
NJ1327001 · 14,000 served
Verona Water Department
NJ0720001 · 13,641 served
Pennsville Twsp. Water Depart.
NJ1708001 · 13,500 served
Saddle Brook Water Dept
NJ0257001 · 13,155 served
Berlin Water Department
NJ0405001 · 12,991 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.
New Jersey Water FAQs
Quick Links
Data source: Utility data from EPA SDWIS. 361 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-18