EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records

COUNTY WATER-SYSTEM LEDGER

St. Mary Parish, Louisiana

Compare active community water systems serving this county in EPA's public export. Systems can serve multiple places, so population totals may overlap.

Systems8active CWS · pop. 2,500+
Population served60,247reported total; may overlap
Current violation flag25.0%2 systems
Serious-violator flag25.0%2 systems

01 / SYSTEMS

Water systems serving St. Mary Parish

Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.

Water systemPopulation servedPrimary sourceCurrent export status
City Of Morgan City Water SystemLA110100512,703Surface waterNo current violation flagged
Water & Sewer Commission 4 Of St MaryLA11010119,709Surface waterNo current violation flagged
City Of Patterson Water SystemLA11010068,456Surface waterNo current violation flagged
City Of Franklin Water SupplyLA11010038,325Surface waterCurrent serious-violator flag
St Mary Water & Sewer Comm #3LA11010107,828Surface waterNo current violation flagged
St Mary Parish W&S #2 Bayou VistaLA11010155,379Surface water purchasedNo current violation flagged
City Of BerwickLA11010145,024Surface water purchasedNo current violation flagged
St Mary Parish Water Sewerage Comm 1LA11010092,823Surface waterCurrent serious-violator flag

02 / SOURCE MIX

Surface water6 systems · 49,844 served
Surface water purchased2 systems · 10,403 served
How to read the population total

It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.