City Water Quality Rankings in Louisiana
260 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#1
Archibald
County, LA
100 A
#2 Bossier City
County, LA
100 A
#3 Livonia
County, LA
100 A
#4 Lockport
County, LA
100 A
#5 Longville
County, LA
100 A
#6 Prairieville
County, LA
100 A
#7 Starks
County, LA
100 A
#8 Start
County, LA
100 A
#9 Woodworth
County, LA
100 A
#10 Abbeville
County, LA
98 A
#11 Dubberly
County, LA
98 A
#12 Echo
County, LA
98 A
#13 Evergreen
County, LA
98 A
#14 Johnson Bayou
County, LA
98 A
#15 Lafayette
County, LA
98 A
#16 Mansura
County, LA
98 A
#17 Milton
County, LA
98 A
#18 Simpson
County, LA
98 A
#19 Welsh
County, LA
98 A
#20 Houma
County, LA
97 A
#21 Angola
County, LA
96 A
#22 Dequincy
County, LA
96 A
#23 Deville
County, LA
96 A
#24 Duson
County, LA
96 A
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.