TTHM (Total Trihalomethanes) violations in Kentucky
46 active public water systems in Kentucky had a TTHM (Total Trihalomethanes) violation in the past three years, 17 of them still unresolved. What TTHM (Total Trihalomethanes) is and why it matters.
Systems with a TTHM (Total Trihalomethanes) violation
Unresolved first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Mountain Water Dist Pike County |
44,057 | 1 | 0 | |
|
Southern Madison Water District Madison County |
14,707 | 2 | 0 | |
|
North Manchester Water Assoc Clay County |
5,332 | 4 | 2 | |
|
Morganfield Water Works Union County |
5,170 | 2 | 0 | |
|
Providence Water Works Webster County |
4,538 | 3 | 0 | |
|
Sturgis Water Works Union County |
3,490 | 3 | 2 | |
|
Black Mtn Utility/dayhoit Harlan County |
1,954 | 4 | 1 | |
|
Black Mtn Utility/rosspoint Harlan County |
1,889 | 4 | 0 | |
|
Earlington Water & Sewer Hopkins County |
1,708 | 3 | 0 | |
|
Uniontown Water & Sewer Dept Union County |
1,496 | 1 | 0 | |
|
Black Mtn Utility/wallins Harlan County |
1,485 | 3 | 0 | |
|
Green Hills Water District Harlan County |
1,443 | 4 | 1 | |
|
Black Mtn Utility/kenvir Harlan County |
1,396 | 3 | 0 | |
|
Lynch Water Works Harlan County |
1,078 | 8 | 3 | |
|
Fordsville Water District Ohio County |
927 | 2 | 1 | |
|
Black Mtn Utility/sukey Ridge Harlan County |
740 | 3 | 0 | |
|
Black Mtn Utility/coxton Harlan County |
356 | 3 | 0 | |
|
Bardstown Municipal Water Dept Nelson County |
31,185 | 2 | 0 | |
|
Southern Water & Sewer District Floyd County |
15,110 | 5 | 0 | |
|
Big Sandy Water District Boyd County |
13,044 | 1 | 0 | |
|
Knox County Utility Commission Knox County |
8,313 | 1 | 0 | |
|
Lyon County Water District Lyon County |
6,744 | 1 | 0 | |
|
Union County Water District Union County |
6,117 | 1 | 0 | |
|
Greenville Utilities Commission Muhlenberg County |
5,649 | 3 | 1 | |
|
Russell Water Company Greenup County |
5,181 | 1 | 0 | |
|
Jackson Municipal Water Works Breathitt County |
4,704 | 1 | 0 | |
|
Nebo Water District Hopkins County |
4,702 | 1 | 0 | |
|
Lewisport Municipal Water Works Hancock County |
3,249 | 1 | 0 | |
|
Fleming-Neon Water Company Letcher County |
3,212 | 6 | 3 | |
|
Lewisburg Water Works Logan County |
3,119 | 5 | 1 | |
|
Jenkins Water System Letcher County |
2,609 | 1 | 0 | |
|
Midway Municipal Water Works Woodford County |
2,174 | 1 | 0 | |
|
Hanson Water System Hopkins County |
2,157 | 1 | 0 | |
|
Munfordville Water Dept Hart County |
2,109 | 1 | 0 | |
|
Wurtland Water Department Greenup County |
1,815 | 1 | 0 | |
|
Centertown Water System Ohio County |
1,485 | 1 | 0 | |
|
Martin Water Department Floyd County |
1,167 | 1 | 0 | |
|
Perdue Farms INC Ohio County |
1,163 | 2 | 1 | |
|
Barlow Water System Ballard County |
1,040 | 3 | 0 | |
|
Smithland Water & Sewer Livingston County |
989 | 1 | 0 | |
|
Butler Water Works Pendleton County |
980 | 2 | 0 | |
|
Center Ridge Water District #2 Calloway County |
377 | 2 | 0 | |
|
Columbus Water Works Hickman County |
300 | 1 | 0 | |
|
Center Ridge Water System Calloway County |
273 | 3 | 1 | |
|
Center Ridge Water District #3 Calloway County |
208 | 4 | 1 | |
|
Center Ridge Water District #4 Calloway County |
105 | 4 | 1 |
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 Kentucky 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.