TTHM (Total Trihalomethanes) violations in Tennessee
61 active public water systems in Tennessee had a TTHM (Total Trihalomethanes) violation in the past three years, 6 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 |
|---|---|---|---|---|
|
First U.d. of Hawkins County Church Hill · Hawkins County |
19,972 | 1 | 0 | |
|
Tuckaleechee Utility District Blount County |
14,522 | 3 | 1 | |
|
South Pittsburg Water System South Pattsburg, South Pittsburg · Marion County |
7,276 | 1 | 0 | |
|
Warren County U.d. #2 Spencer · Van Buren County |
5,611 | 3 | 1 | |
|
Jackson County U.d. #3 Jackson County |
3,917 | 2 | 1 | |
|
Cumberland Gap Water Services Cumberland Gap · Claiborne County |
340 | 3 | 0 | |
|
City of Maryville W&s Dept Maryville · Blount County |
52,105 | 1 | 0 | |
|
Knox-Chapman Utility District Knoxville · Knox County |
41,311 | 1 | 0 | |
|
H.b.& T.s. Utility District Williamson County |
40,094 | 2 | 1 | |
|
Anderson County W.a. Lake City · Anderson County |
29,945 | 3 | 1 | |
|
Northeast Knox U.d. Corryton, Knoxville · Knox County |
27,941 | 1 | 0 | |
|
East Montgomery U.d. Montgomery County |
18,382 | 1 | 0 | |
|
Harriman Utility Board Harriman · Roane County |
16,653 | 1 | 0 | |
|
Claiborne Utilities District New Tazewell · Claiborne County |
16,135 | 3 | 1 | |
|
Cunningham Utility District Montgomery County |
16,068 | 2 | 1 | |
|
Cumberland Utility District Harriman · Roane County |
14,085 | 8 | 2 | |
|
Centerville Water System Centerville · Hickman County |
11,011 | 2 | 1 | |
|
Hartsville-Trousdale W&s U.d. Hartsville · Trousdale County |
10,562 | 3 | 1 | |
|
Dunlap Water System Dunlap · Sequatchie County |
9,782 | 4 | 1 | |
|
Linden Water Dept Linden · Perry County |
9,568 | 5 | 2 | |
|
Byrdstown Water Department Byrdstown · Pickett County |
8,658 | 4 | 1 | |
|
Maynardville Water Dept Maynardville · Union County |
7,940 | 1 | 0 | |
|
First U.d. of Hardin County Counce · Hardin County |
7,602 | 2 | 1 | |
|
Smithville Water System Smithville · DeKalb County |
7,049 | 4 | 3 | |
|
Tracy City Water System Tracy City · Grundy County |
5,692 | 3 | 1 | |
|
McKenzie Water Dept Mckenzie · Carroll County |
5,464 | 4 | 1 | |
|
Fall Creek Falls U.d. Bledsoe County |
5,434 | 4 | 2 | |
|
Decherd Water Dept Decherd · Franklin County |
4,809 | 2 | 1 | |
|
Clifton Water Dept Clifton · Wayne County |
4,110 | 1 | 0 | |
|
Mason Water Department Mason · Tipton County |
3,642 | 5 | 2 | |
|
McEwen Waterworks Mcewen · Humphreys County |
3,594 | 1 | 0 | |
|
Cagle-Fredonia U.d. Sequatchie County |
3,363 | 2 | 1 | |
|
Siam Utility District Elizabethton · Carter County |
3,319 | 3 | 2 | |
|
Alexandria Water System DeKalb County |
2,657 | 5 | 1 | |
|
Bells Public Utility District Bells · Crockett County |
2,610 | 3 | 0 | |
|
Aedc Complex-Water Plant Coffee County |
2,501 | 1 | 0 | |
|
Ridgely Water System Ridgely · Lake County |
2,059 | 1 | 0 | |
|
Venue @ 109 Wilson County |
1,890 | 2 | 1 | |
|
Intermont Utility District Sullivan County |
1,848 | 2 | 1 | |
|
Belvidere Rural U.d. Belvidere · Franklin County |
1,771 | 2 | 1 | |
|
Obion Water Dept Obion · Obion County |
1,615 | 1 | 0 | |
|
Clearfork Utility District Clairfield · Claiborne County |
1,305 | 2 | 0 | |
|
Sharon Water System Sharon · Weakley County |
1,243 | 5 | 2 | |
|
Chalet Village North Gatlinburg · Sevier County |
1,203 | 3 | 2 | |
|
Gallaway Water Dept Gallaway · Fayette County |
1,158 | 1 | 0 | |
|
Bethel Springs Water System Bethel Springs · McNairy County |
940 | 1 | 0 | |
|
Puryear Water System Puryear · Henry County |
833 | 3 | 1 | |
|
East Sevier County U.d. Sevierville · Sevier County |
815 | 6 | 1 | |
|
Woodlawn Shores Water Dept Sugar Tree · Decatur County |
450 | 3 | 1 | |
|
Aspen Youth Academy Humphreys County |
225 | 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 Tennessee 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.