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 |
|---|---|---|---|---|
|
Town of Carrollton Carroll County |
1,122 | 1 | 0 | |
|
Crooked Creek W/a South Lawrence County |
1,100 | 1 | 0 | |
|
Town of Mathiston Webster County |
1,090 | 1 | 0 | |
|
North Lee W/a-Auburn System #1 Lee County |
1,088 | 3 | 0 | |
|
MT Comfort W/a Calhoun County |
1,085 | 1 | 0 | |
|
Town of Potts Camp Marshall County |
1,085 | 1 | 0 | |
|
Town of Pittsboro Calhoun County |
1,077 | 2 | 1 | |
|
Hatten Water Assn Jones County |
1,075 | 1 | 0 | |
|
Town of Liberty Amite County |
1,069 | 1 | 0 | |
|
Copiah County Industrial Park Copiah County |
1,062 | 4 | 1 | |
|
Matthews Moss Water Assn Jones County |
1,051 | 1 | 0 | |
|
Black Jack Water Assn #1 Oktibbeha County |
1,024 | 1 | 0 | |
|
MT Comfort W/a-Mt Moriah Calhoun County |
1,011 | 1 | 0 | |
|
MT Olive Water Association Hinds County |
1,003 | 1 | 0 | |
|
Mary Springs Water Association Amite County |
995 | 1 | 0 | |
|
Pan Handle Water Association Choctaw County |
990 | 1 | 0 | |
|
Town of Shuqualak Noxubee County |
989 | 1 | 0 | |
|
Town of Dekalb Kemper County |
985 | 4 | 0 | |
|
Town of Tremont Itawamba County |
985 | 3 | 0 | |
|
Lakewood Environmental Harrison County |
982 | 3 | 0 | |
|
Pope-Courtland Water Assn Panola County |
977 | 1 | 0 | |
|
Buffalo Water Association Wilkinson County |
972 | 3 | 0 | |
|
Tallahala W/a-Ted Clear Jasper County |
969 | 1 | 0 | |
|
Town of Jonestown Coahoma County |
968 | 2 | 1 | |
|
Town of Gloster Amite County |
960 | 1 | 0 | |
|
Hiwannee Water Association #2 Wayne County |
956 | 5 | 0 | |
|
Town of Crawford Lowndes County |
942 | 3 | 1 | |
|
Town of Duck Hill Montgomery County |
924 | 4 | 0 | |
|
Town of Richton Perry County |
920 | 1 | 0 | |
|
Harmony W/a #7-N Enterprise Clarke County |
919 | 2 | 0 | |
|
Centerville Community W/a Holmes County |
918 | 2 | 0 | |
|
Town of Enterprise Clarke County |
916 | 1 | 0 | |
|
Rock Hill Water Association Oktibbeha County |
915 | 3 | 0 | |
|
Thomastown Water Association Leake County |
908 | 1 | 0 | |
|
S MS Public Water Auth-McLaurin Forrest County |
905 | 1 | 0 | |
|
Star Water Company Rankin County |
904 | 1 | 0 | |
|
Entergy Operations, INC Claiborne County |
900 | 4 | 0 | |
|
Boyle-Skene Water Assn Bolivar County |
898 | 1 | 0 | |
|
So. Sunflower W/a-Inverness Sunflower County |
898 | 1 | 0 | |
|
Morris Water Association Smith County |
887 | 1 | 0 | |
|
South Winona Water Association Montgomery County |
874 | 1 | 0 | |
|
Kwp Utility Company LLC Tunica County |
869 | 6 | 0 | |
|
Alpine Water Association Union County |
866 | 1 | 0 | |
|
Town of Friars Point Coahoma County |
858 | 5 | 1 | |
|
Traxler Water Association Smith County |
855 | 3 | 0 | |
|
Raytheon Company Scott County |
850 | 1 | 0 | |
|
Humphreys CO W/a #6-Gooden Lak Humphreys County |
847 | 1 | 0 | |
|
Harmony Water Association #2 Clarke County |
840 | 2 | 0 | |
|
Country Haven Mobile Home Park DeSoto County |
829 | 2 | 1 | |
|
Sixtown Water Association Franklin County |
828 | 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.