City Water Quality Rankings in New Jersey
266 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#97
Bellmawr
County, NJ
84 B
#98 Califon
County, NJ
84 B
#99 East Newark
County, NJ
84 B
#100 Hammonton
County, NJ
84 B
#101 Kearny
County, NJ
84 B
#102 Matawan
County, NJ
84 B
#103 Pemeberton
County, NJ
84 B
#104 Salem City
County, NJ
84 B
#105 Berlin
County, NJ
83 B
#106 Freehold
County, NJ
83 B
#107 Long Valley
County, NJ
83 B
#108 Barnegat Light
County, NJ
82 B
#109 Cape May Point
County, NJ
82 B
#110 Helmetta
County, NJ
82 B
#111 Island Heights Boro
County, NJ
82 B
#112 Manchester
County, NJ
82 B
#113 National Park
County, NJ
82 B
#114 Pennsauken
County, NJ
82 B
#115 Spotswood
County, NJ
82 B
#116 Wall Twp
County, NJ
82 B
#117 Washington
County, NJ
82 B
#118 Avon
County, NJ
81 B
#119 Flemington
County, NJ
81 B
#120 Haskell
County, NJ
81 B
Frequently Asked Questions
How are city water quality rankings calculated in New Jersey?
WaterQ city rankings are based on EPA SDWIS data across local public water systems, including contaminant detections, compliance violations, and recency-weighted score signals.
Can I compare two cities in New Jersey?
Yes. Use the city comparison links on this page or open the Compare tool to evaluate two cities side by side on score, grade, and water system coverage.
How often does WaterQ refresh city data?
City-level metrics refresh when new EPA data is processed. Check city pages for latest score and violation context.