Tapcensus

Lead and Copper Rule (LCR) violations in Louisiana

225 active public water systems in Louisiana had a Lead and Copper Rule (LCR) violation in the past three years, 217 of them still unresolved. What Lead and Copper Rule (LCR) is and why it matters.

Health effects: Lead: no safe level for children. Causes irreversible neurological damage, impaired cognitive development, behavioral problems, and reduced IQ in children under 6. In adults: hypertension, cardiovascular disease, kidney damage. Copper: acute gastrointestinal distress at high levels; liver/kidney damage at very high chronic levels.

Systems with a Lead and Copper Rule (LCR) violation

Unresolved first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
City of Ruston Water System
Lincoln County
22,468 1 1
Village of Parks Water System
St. Martin County
12,801 5 4
City of Carencro Water System
Lafayette County
11,301 2 2
City of Youngsville Purchase WS
Lafayette County
10,281 2 1
Town of New Roads Water System
Pointe Coupee County
9,024 5 3
City of Tallulah Water System
Madison County
8,601 6 3
Southwest Allen WW District NO 2
Allen County
8,106 1 1
City of Springhill Water System
Webster County
7,800 2 2
City of Winnsboro Water System
Franklin County
7,518 4 2
City of Oakdale Water System
Allen County
6,114 3 1
Grambling State University WS
Lincoln County
6,000 4 3
City of Lake Providence Water System
East Carroll County
5,850 5 3
City of Berwick
St. Mary County
5,024 2 1
Town of Grambling Water System
Lincoln County
4,949 5 3
Pinehill Waterworks District
Caddo County
4,926 6 4
City of Westlake Water System
Calcasieu County
4,858 2 2
Town of Rayville Water System
Richland County
4,842 5 3
Fourth Ward Water Works
Livingston County
4,839 3 3
Keatchie Water System
De Soto County
4,446 6 4
Town of Homer Water System
Claiborne County
4,365 5 1
Town of Sunset Water System
St. Landry County
4,356 4 1
Tensas Water District Association
Tensas County
3,843 2 1
Town of Ferriday Water System
Concordia County
3,816 6 2
West Grant Water Association
Grant County
3,324 5 4
ST Martin Water Works District 3 Cade
St. Martin County
3,249 3 1
Village of Hessmer Water System
Avoyelles County
3,246 3 1
Town of Cottonport Water System
Avoyelles County
3,120 3 1
East Allen Parish Water Works
Allen County
3,030 2 1
ST Martin Water District 4 Catahoula
St. Martin County
3,000 2 1
ST Tammany Water District 3
St. Tammany County
2,920 3 3
Town of Gramercy Waterworks
St. James County
2,860 2 0
Egan Water Corporation NO 2
Acadia County
2,835 4 2
ST Mary Parish Water Sewerage Comm 1
St. Mary County
2,823 4 2
Town of Jonesville Water System
Catahoula County
2,811 2 1
Belmont Waterworks INC
Sabine County
2,805 5 4
Evangeline WW District 1 Pine Prairie
Evangeline County
2,598 4 2
Town of White Castle Water System
Iberville County
2,550 5 4
Exxonmobil Baton Rouge Refinery
East Baton Rouge County
2,500 1 1
Nebo Water System INC
LaSalle County
2,460 2 2
Town of Delcambre Water System
Vermilion County
2,457 3 2
Holmesville Water System
Union County
2,406 1 1
ST Martin Water and Sewer Commission 1
St. Martin County
2,262 2 1
Black River Water System
Catahoula County
2,256 2 1
Town of Duson Water System
Lafayette County
2,190 1 0
Village of Palmetto Water System
St. Landry County
2,178 6 4
Town of Slaughter Water System
East Feliciana County
1,920 1 1
Red Hill Waterworks Inc.
Grant County
1,914 6 2
Alberta Water System
Bienville County
1,860 5 1
South Bossier Water System
Bossier County
1,755 4 1
Pleasant Valley Water System
Webster County
1,683 2 1
About this data

A system is counted once if any of its violations in the past three years involved Lead and Copper Rule (LCR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Lead and Copper Rule (LCR) alone.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Louisiana records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.