City Water Quality Rankings in New Jersey
265 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#193
New Brunswick
County, NJ
51 D
#194 Cedar Knolls
County, NJ
50 D
#195 East Hanover Township
County, NJ
50 D
#196 Totowa Borough
County, NJ
50 D
#197 Flanders
County, NJ
49 D
#198 New Lisbon
County, NJ
49 D
#199 Brigantine
County, NJ
48 D
#200 Edison
County, NJ
47 D
#201 Iselin
County, NJ
47 D
#202 Franklinville
County, NJ
45 D
#203 Hopewell
County, NJ
45 D
#204 Ramsey
County, NJ
44 F
#205 Denville
County, NJ
42 F
#206 Medford
County, NJ
42 F
#207 Bloomingdale Boro
County, NJ
41 F
#208 North Caldwell
County, NJ
41 F
#209 Woodbine
County, NJ
40 F
#210 Belmar
County, NJ
39 F
#211 East Brunswick
County, NJ
39 F
#212 Waldwick
County, NJ
37 F
#213 Wanaque
County, NJ
37 F
#214 Bloomfield
County, NJ
36 F
#215 Trenton
County, NJ
36 F
#216 Cedar Grove
County, NJ
35 F
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.