Tapcensus

Louisiana

St. Landry Parish drinking water quality

29 active public water systems serve 112,371 people in St. Landry Parish. 13 are compliant, 16 had at least one EPA violation in the past three years, 4 are designated serious violators, and 5 carry a health flag.

Active systems 29 28 community systems
People served 112K by public water systems
Systems with violations 16 55% of active systems, past 3 years
Serious violators 4 5 systems carry a health flag

Needs attention

Village of Cankton Water System LA1097025 · Community water system · Serves 2,730 2 rules violated in the past three years
Town of Melville Water System LA1097007 · Community water system · Serves 1,314 5 rules violated in the past three years. Unresolved: Ground Water Rule, Lead and Copper Rule, Lead and Copper Rule Revisions, and Public Notice Rule and Revised PN Rule.
Walmart Distribution Center Water System LA2097051 · Non-Transient non-community system · Serves 600 3 rules violated in the past three years. Unresolved: Ground Water Rule, Lead and Copper Rule, and Public Notice Rule and Revised PN Rule.
Midway Water System INC LA1097008 · Community water system · Serves 192 6 rules violated in the past three years. Unresolved: Revised Total Coliform Rule, Ground Water Rule, Lead and Copper Rule, Lead and Copper Rule Revisions, Public Notice Rule and Revised PN Rule, and Consumer Confidence Rule.
Village of Palmetto Water System LA1097011 · Community water system · Serves 2,178 6 rules violated in the past three years. Unresolved: Revised Total Coliform Rule, Ground Water Rule, Lead and Copper Rule, and Public Notice Rule and Revised PN Rule.
Town of Grand Coteau Water System LA1097001 · Community water system · Serves 1,650 5 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions.

Community water systems

28 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
City of Opelousas Water System
 20,388 3 0
Lawco Eunice Water System
 15,471 0 0
Town of Leonville Water System
 9,552 0 0
Lewisburg Bellevue Water System
 8,325 0 0
Savoy Swords Water System INC
 7,326 1 0
Plaisance Water System
 6,465 1 0
Prairie Ronde Water System INC
 6,105 0 0
ST Landry Water Works District 2 Rural
 4,761 0 0
Town of Sunset Water System
 4,356 4 1
Town of Port Barre Water System
 3,828 0 0
Lawtell Water Works District NO 1
 3,717 0 0
Village of Cankton Water System
 2,730 2 0
Mamou Road Water District, INC
 2,478 0 0
Village of Palmetto Water System
 2,178 6 4
Town of Krotz Springs Water System
 2,130 1 1
ST Landry Wwd 3 Port Barre Area D
 1,860 2 0
Town of Washington Water System
 1,713 0 0
Greenbriar Prairie Basse Water System
 1,656 1 0
Town of Grand Coteau Water System
 1,650 5 1
Morrow Water System INC
 1,572 0 0
Town of Melville Water System
 1,314 5 4
ST Landry Waterworks District No. 5
 519 3 2
ST Landry Wwd 3 Port Barre Area B
 516 1 0
ST Landry Wwd 3 Port Barre Area C
 351 0 0
ST Landry Wwd 3 Port Barre Area a
 270 0 0
Hidden Hills Subdivision Water System
 240 0 0
Midway Water System INC
 192 6 6
Cane View Mobile Home Village
 108 2 1
Non-community systems (1: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Walmart Distribution Center Water System
 600 3 3
Inactive systems (46, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

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.