City Water Quality Rankings in New Jersey
265 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#49
Bound Brook
County, NJ
90 A
#50 Randolph Twp
County, NJ
90 A
#51 Seaside Heights
County, NJ
90 A
#52 Sicklerville
County, NJ
90 A
#53 Southampton
County, NJ
90 A
#54 Wharton
County, NJ
90 A
#55 Clifton
County, NJ
89 B
#56 Ledgewood
County, NJ
89 B
#57 Parsippany
County, NJ
89 B
#58 Woolwich
County, NJ
89 B
#59 Hampton Twp
County, NJ
88 B
#60 Lavallette
County, NJ
88 B
#61 Mantua
County, NJ
88 B
#62 Princeton
County, NJ
88 B
#63 Bellmawr
County, NJ
87 B
#64 Califon
County, NJ
87 B
#65 Delran
County, NJ
87 B
#66 Mays Landing
County, NJ
87 B
#67 Newton
County, NJ
87 B
#68 Atlantic Highlands
County, NJ
86 B
#69 Brick Twp
County, NJ
86 B
#70 East Newark
County, NJ
86 B
#71 Fairfield
County, NJ
86 B
#72 Frenchtown
County, NJ
86 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.