City Water Quality Rankings in Louisiana
260 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#241
Franklin
County, LA
0 F
#242 Gramercy
County, LA
0 F
#243 Grand Coteau
County, LA
0 F
#244 Greenwood
County, LA
0 F
#245 Gueydan
County, LA
0 F
#246 Haughton
County, LA
0 F
#247 Iota
County, LA
0 F
#248 Keatchie
County, LA
0 F
#249 Mamou
County, LA
0 F
#250 Marion
County, LA
0 F
#251 Montgomery
County, LA
0 F
#252 Newellton
County, LA
0 F
#253 Oil City
County, LA
0 F
#254 Palmetto
County, LA
0 F
#255 Rayville
County, LA
0 F
#256 Sterlington
County, LA
0 F
#257 Tallulah
County, LA
0 F
#258 Transylvania
County, LA
0 F
#259 Winnfield
County, LA
0 F
#260 Zwolle
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.