WaterQ

City Water Quality Rankings in Louisiana

260 cities ranked by drinking water quality.

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Popular city water quality comparisons

Archibald, LA vs Bossier City, LA Compare → Livonia, LA vs Lockport, LA Compare → Longville, LA vs Prairieville, LA Compare → Starks, LA vs Start, LA Compare →

Trending Cities

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#49
Ruston
County, LA
94 A
#50
Sulphur
County, LA
94 A
#51
Breaux Bridge
County, LA
93 A
#52
Fort Johnson
County, LA
93 A
#53
Gretna
County, LA
93 A
#54
Lake Arthur
County, LA
93 A
#55
Port Allen
County, LA
93 A
#56
Broussard
County, LA
92 A
#57
Deridder
County, LA
92 A
#58
Effie
County, LA
92 A
#59
Lena
County, LA
92 A
#60
Mandeville
County, LA
92 A
#61
Mer Rouge
County, LA
92 A
#62
Singer
County, LA
92 A
#63
Tioga
County, LA
92 A
#64
Glenmora
County, LA
91 A
#65
Livingston
County, LA
91 A
#66
Port Barre
County, LA
91 A
#67
Sunset
County, LA
91 A
#68
Vidalia
County, LA
91 A
#69
Convent
County, LA
90 A
#70
Denham Springs
County, LA
90 A
#71
Hineston
County, LA
90 A
#72
Hornbeck
County, LA
90 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.

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