Water quality in Deer Isle, Maine
Deer Isle is in Hancock County. 206 active public water systems serve the county; 135 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Hancock County
29 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Stonington Manor Stonington |
44 | 1 | 9.1 mi | |
| Parker Ridge Retirement Community Blue Hill |
120 | 2 | 9.5 mi | |
| Castine Water Department Castine |
983 | 0 | 9.8 mi | |
| Hancock Village MHP Castine |
73 | 3 | 10.0 mi | |
| Blue Hill Terrace Blue Hill |
60 | 3 | 10.2 mi | |
| Harbor View I & II Blue Hill |
40 | 1 | 11.2 mi | |
| Stonington Water Company Stonington |
683 | 2 | 13.9 mi | |
| South Penobscot Water Association Penobscot |
38 | 3 | 14.1 mi | |
| Southwest Harbor Water & Sewer District Southwest Hbr |
2,480 | 1 | 17.8 mi | |
| Mount Desert Water Dist North Mount Desert |
1,623 | 3 | 19.0 mi | |
| Mount Desert Water Dist -Seal Mount Desert |
865 | 2 | 19.7 mi | |
| Silver Lake Estates Bucksport |
110 | 0 | 19.9 mi | |
| Cold Spring Water Company Lamoine |
305 | 2 | 20.5 mi | |
| Birch Haven Trailer Park Hancock |
43 | 7 | 21.3 mi | |
| Maine Water Company Bucksport Division Bucksport |
1,700 | 0 | 21.5 mi | |
| Sherwood Forest MHP Bucksport |
68 | 3 | 21.6 mi | |
| Harriman Cove Park LLC Bucksport |
45 | 1 | 22.1 mi | |
| Ellsworth Water Department Ellsworth |
3,910 | 3 | 22.5 mi | |
| Sun Hancock Heights East Hancock |
158 | 0 | 23.2 mi | |
| Crescent Mobile Home Park Hancock |
55 | 1 | 23.5 mi | |
| Town of Bar Harbor Water Division Bar Harbor |
4,443 | 0 | 23.8 mi | |
| Sun Hancock Heights-West Hancock |
155 | 0 | 25.8 mi | |
| Coastal Estates Hancock |
48 | 0 | 25.8 mi | |
| Birch Tree Meadows MHP Hancock |
105 | 3 | 26.0 mi | |
| Long Pond Water District Sorrento |
308 | 2 | 29.3 mi |
Non-community systems in Hancock County (176: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Hancock County, nearest to Deer Isle first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau county subdivision files or the centre of the first town EPA lists the system as serving, from Census Bureau place files.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
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. Retrieved from ECHO on Oct 11, 2026.