TTHM (Total Trihalomethanes) violations in Mississippi
501 active public water systems in Mississippi had a TTHM (Total Trihalomethanes) violation in the past three years, 11 of them in the latest quarter of EPA's data. What TTHM (Total Trihalomethanes) is and why it matters.
Systems with a TTHM (Total Trihalomethanes) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Ioc-Lula, Inc/isle of Capri Coahoma County |
600 | 5 | 0 | |
|
MT Comfort W/a-Sarepta Calhoun County |
599 | 1 | 0 | |
|
Town of Cary Sharkey County |
591 | 9 | 0 | |
|
Cold Springs Water Association Covington County |
589 | 1 | 0 | |
|
Sanders Water Association,inc Lafayette County |
581 | 2 | 0 | |
|
Baxter Healthcare Corp Bolivar County |
572 | 1 | 0 | |
|
Wake Forest Water Assn Oktibbeha County |
571 | 1 | 0 | |
|
Houlka-Washington Ext Pontotoc County |
570 | 4 | 0 | |
|
South Lake Water Association Quitman County |
570 | 2 | 0 | |
|
Town of New Augusta Perry County |
570 | 2 | 1 | |
|
Town of Mize Smith County |
568 | 1 | 0 | |
|
McNair-Stampley W/a #3 Jefferson County |
562 | 2 | 0 | |
|
Town of Weir Choctaw County |
560 | 1 | 0 | |
|
Midway W/a #1 Yazoo County |
552 | 1 | 0 | |
|
Truelight Redevelopment Grp #2 Sharkey County |
546 | 3 | 0 | |
|
Fentress Community W/s Choctaw County |
544 | 1 | 0 | |
|
Town of Merigold Bolivar County |
542 | 4 | 0 | |
|
North Bolivar W/a Bolivar County |
539 | 1 | 0 | |
|
Tougaloo College Madison County |
534 | 1 | 0 | |
|
Valley Park W/a Issaquena County |
533 | 6 | 1 | |
|
Morgan Chapel Water Assn Oktibbeha County |
528 | 2 | 0 | |
|
Morrill Road Water Association Oktibbeha County |
526 | 4 | 0 | |
|
Philipp Water Association Tallahatchie County |
518 | 5 | 0 | |
|
Siloam W/a #4-Pine Bluff Clay County |
515 | 3 | 1 | |
|
Town of Walnut Grove Leake County |
510 | 1 | 0 | |
|
White Cypress Lakes Hancock County |
507 | 3 | 0 | |
|
Lake Water Works Scott County |
500 | 1 | 0 | |
|
Longview Water Association Oktibbeha County |
500 | 1 | 0 | |
|
Louin Water Works Jasper County |
500 | 1 | 0 | |
|
ST Thomas Water Association Hinds County |
500 | 2 | 0 | |
|
SW MS Comm College Pike County |
500 | 2 | 0 | |
|
Midway W/a #2 Yazoo County |
494 | 1 | 0 | |
|
Wautubbee Water Assn Clarke County |
486 | 2 | 0 | |
|
Wolf River RV Resort Harrison County |
475 | 1 | 0 | |
|
Pine Grove Water Association Coahoma County |
457 | 3 | 0 | |
|
Moore Bayou Water Association Coahoma County |
438 | 4 | 1 | |
|
Rena Lara Water Association Coahoma County |
436 | 4 | 0 | |
|
Moore Bayou W/a #2 Coahoma County |
420 | 4 | 0 | |
|
Town of Webb Tallahatchie County |
416 | 3 | 0 | |
|
Sugar Creek Water Association Attala County |
405 | 1 | 0 | |
|
Hcua-East Gulfport · Harrison County |
404 | 1 | 0 | |
|
Moore Bayou W/a #3 Coahoma County |
378 | 4 | 1 | |
|
Hays Creek W/a-Minerva Montgomery County |
372 | 2 | 0 | |
|
Town of Sturgis Oktibbeha County |
323 | 2 | 0 | |
|
Town of Lyon Coahoma County |
270 | 7 | 0 | |
|
Town of Doddsville Sunflower County |
264 | 6 | 1 | |
|
Green Acres W/a-North Coahoma County |
237 | 4 | 0 | |
|
Delta City Utility District Sharkey County |
230 | 1 | 0 | |
|
Lu-Rand Utility District Coahoma County |
105 | 6 | 0 | |
|
Gulf Lng Clean Energy Potable Water Plan Pascagoula · Jackson County |
25 | 1 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved TTHM (Total Trihalomethanes), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not TTHM (Total Trihalomethanes) 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 Mississippi 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.