City Water Quality Rankings in Louisiana
260 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#97
Zachary
County, LA
86 B
#98 Angie
County, LA
85 B
#99 New Roads
County, LA
85 B
#100 Rayne
County, LA
85 B
#101 Slaughter
County, LA
85 B
#102 Folsom
County, LA
84 B
#103 Independence
County, LA
84 B
#104 Kaplan
County, LA
84 B
#105 Keithville
County, LA
83 B
#106 Rosepine
County, LA
83 B
#107 Simsboro
County, LA
83 B
#108 Westwego
County, LA
83 B
#109 Athens
County, LA
82 B
#110 Baker
County, LA
82 B
#111 Covington
County, LA
82 B
#112 Lake Charles
County, LA
82 B
#113 Lawtell
County, LA
82 B
#114 Marksville
County, LA
82 B
#115 Plaquemine
County, LA
82 B
#116 Washington
County, LA
82 B
#117 St. Francisville
County, LA
81 B
#118 Barksdale Afb
County, LA
80 B
#119 Scott
County, LA
80 B
#120 Turkey Creek
County, LA
80 B
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.