City Water Quality Rankings in Louisiana
264 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#241
Converse
County, LA
0 F
#242 Dubach
County, LA
0 F
#243 Egan
County, LA
0 F
#244 Elm Grove
County, LA
0 F
#245 Franklin
County, LA
0 F
#246 Georgetown
County, LA
0 F
#247 Gramercy
County, LA
0 F
#248 Grand Cane
County, LA
0 F
#249 Grand Coteau
County, LA
0 F
#250 Gueydan
County, LA
0 F
#251 Haughton
County, LA
0 F
#252 Iota
County, LA
0 F
#253 Logansport
County, LA
0 F
#254 Mamou
County, LA
0 F
#255 Marion
County, LA
0 F
#256 Montgomery
County, LA
0 F
#257 Newellton
County, LA
0 F
#258 Palmetto
County, LA
0 F
#259 Rayville
County, LA
0 F
#260 Sterlington
County, LA
0 F
#261 Tallulah
County, LA
0 F
#262 Transylvania
County, LA
0 F
#263 Winnfield
County, LA
0 F
#264 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.