City Water Quality Rankings in New Jersey
266 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#1
East Rutherford
County, NJ
100 A
#2 Hancocks Bridge
County, NJ
100 A
#3 Highland Park
County, NJ
100 A
#4 Lambertville
County, NJ
100 A
#5 Longport
County, NJ
100 A
#6 Wantage
County, NJ
100 A
#7 Atco
County, NJ
98 A
#8 Fairton
County, NJ
98 A
#9 Franklin Lakes
County, NJ
98 A
#10 Lakehurst
County, NJ
98 A
#11 Mickleton
County, NJ
98 A
#12 Oak Ridge
County, NJ
98 A
#13 Pine Beach
County, NJ
98 A
#14 Shamong
County, NJ
98 A
#15 Blairstown
County, NJ
96 A
#16 Egg Harbor Township
County, NJ
96 A
#17 Winfield Twp
County, NJ
96 A
#18 Woolwich
County, NJ
96 A
#19 Haworth
County, NJ
95 A
#20 Manahawkin
County, NJ
95 A
#21 Upper Twp
County, NJ
95 A
#22 Andover
County, NJ
94 A
#23 Byram Twp
County, NJ
94 A
#24 Columbus
County, NJ
94 A
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.