TTHM (Total Trihalomethanes) violations in Maine
38 active public water systems in Maine had a TTHM (Total Trihalomethanes) violation in the past three years, 2 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 |
|---|---|---|---|---|
|
Stonington Water Company Stonington · Hancock County |
683 | 2 | 0 | |
|
Loring Development Authority Limestone · Aroostook County |
180 | 5 | 1 | |
|
Ellsworth Water Department Ellsworth · Hancock County |
3,910 | 3 | 1 | |
|
Pittsfield Water Dept Pittsfield · Somerset County |
3,228 | 3 | 0 | |
|
Dexter Utility District Dexter · Penobscot County |
2,338 | 1 | 0 | |
|
Lubec Water District Lubec · Washington County |
1,775 | 2 | 1 | |
|
Mount Desert Water Dist North Mount Desert · Hancock County |
1,623 | 3 | 0 | |
|
Guilford-Sangerville Utilities District Abbot, Guilford, Parkman and 1 more · Piscataquis County |
1,535 | 2 | 0 | |
|
Mars Hill and Blaine Water Company Mars Hill · Aroostook County |
1,500 | 6 | 0 | |
|
Jackman Utility District Jackman · Somerset County |
1,125 | 2 | 0 | |
|
Vinalhaven Water District Vinalhaven · Knox County |
1,053 | 3 | 1 | |
|
Howland Water Department Howland · Penobscot County |
1,025 | 1 | 0 | |
|
Jay Village Water District Jay · Franklin County |
975 | 3 | 1 | |
|
Harrison Water District Harrison · Cumberland County |
863 | 4 | 2 | |
|
Limerick Water District Limerick · York County |
625 | 2 | 0 | |
|
Island Falls Water Dept Island Falls · Aroostook County |
475 | 5 | 1 | |
|
Mountain View Correctional Facility Charleston · Penobscot County |
468 | 4 | 1 | |
|
Buckfield Village Corporation Buckfield · Oxford County |
425 | 4 | 2 | |
|
Keywood Manor MHP LLC Alfred · York County |
411 | 2 | 0 | |
|
Riverside Terrace Skowhegan · Somerset County |
350 | 1 | 0 | |
|
Long Pond Water District Sorrento · Hancock County |
308 | 2 | 0 | |
|
Canton Water District Canton · Oxford County |
243 | 3 | 1 | |
|
Sandy Bottom Estates MHP Turner · Androscoggin County |
168 | 2 | 0 | |
|
Msu 122 Woodland Consolidated School Woodland · Aroostook County |
160 | 2 | 1 | |
|
Msad 33 Wisdom Jr-Sr High School St Agatha · Aroostook County |
126 | 2 | 1 | |
|
Otis School Dept-Beech Hill School Otis · Hancock County |
112 | 3 | 2 | |
|
Coastal Maine Botanical Gardens Boothbay · Lincoln County |
110 | 2 | 0 | |
|
Maine School Solutions Belgrade · Kennebec County |
95 | 1 | 0 | |
|
Hebron Water Company Hebron · Oxford County |
90 | 3 | 0 | |
|
Island Medical Center Stonington · Hancock County |
90 | 3 | 2 | |
|
Hancock Village MHP Castine · Hancock County |
73 | 3 | 1 | |
|
Downeast Correctional Facility Machiasport · Washington County |
63 | 3 | 0 | |
|
Pemaquid Villas MHP Bristol · Lincoln County |
53 | 3 | 0 | |
|
Town & Country Trailer Park Corinth · Penobscot County |
48 | 3 | 0 | |
|
Tiny Creations Daycare Litchfield · Kennebec County |
41 | 3 | 0 | |
|
Crest View Manor Houlton · Aroostook County |
38 | 6 | 2 | |
|
Msad 41 Marion C Cook School Lagrange · Penobscot County |
25 | 4 | 1 | |
|
US Coast Guard Station-Jonesport Jonesport · Washington County |
25 | 4 | 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 Maine 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.