City Water Quality Rankings in Louisiana
264 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#217
Colfax
County, LA
22 F
#218 Grambling
County, LA
21 F
#219 Independence
County, LA
21 F
#220 Westlake
County, LA
21 F
#221 Oil City
County, LA
18 F
#222 Cullen
County, LA
15 F
#223 Lake Providence
County, LA
15 F
#224 Melville
County, LA
14 F
#225 Monroe
County, LA
13 F
#226 Plain Dealing
County, LA
13 F
#227 Farmerville
County, LA
12 F
#228 Greenwood
County, LA
12 F
#229 St Joseph
County, LA
5 F
#230 Mansfield
County, LA
2 F
#231 Alanta
County, LA
0 F
#232 Arcadia
County, LA
0 F
#233 Belmont
County, LA
0 F
#234 Bernice
County, LA
0 F
#235 Bogalusa
County, LA
0 F
#236 Cameron
County, LA
0 F
#237 Campti
County, LA
0 F
#238 Castor
County, LA
0 F
#239 Chatham
County, LA
0 F
#240 Choudrant
County, LA
0 F
Frequently Asked Questions
How are city water quality rankings calculated in Louisiana?
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 Louisiana?
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.