562 water systems in Maine have at least one health-based violation on record. The system with the most health-based violations is Mars Hill and Blaine Water Company in Mars Hill with 126 health-based violations. Health-based violations mean a system exceeded an EPA maximum contaminant level or failed required treatment standards.
| Water System | City | Population | Health Violations | Total Violations |
|---|
| Mars Hill and Blaine Water Company |
Mars Hill | 1,500 |
126 | 261 |
| Loring Development Authority |
Wiscasset | 180 |
60 | 74 |
| Long Pond Water District |
Sullivan | 308 |
56 | 67 |
| US Coastguard Station-Jonesport |
Waterville | 25 |
42 | 53 |
| Unity by the Stream LLC |
Hancock | 88 |
41 | 70 |
| Sugarloaf Water Association |
Carrabassett Valley | 1,730 |
28 | 63 |
| Washington County Community College #1 |
Calais | 99 |
22 | 29 |
| Jackman Utility District |
Jackman | 1,125 |
22 | 27 |
| Ellsworth Water Department |
Surry | 3,910 |
21 | 37 |
| Vinalhaven Water District |
Poland | 1,053 |
21 | 27 |
| Danforth Plaza |
Hermon | 47 |
20 | 54 |
| Jay Village Water District |
Jay | 975 |
18 | 35 |
| Boudreau Trailer Park |
Princeton | 50 |
15 | 103 |
| Hebron Water Company |
Turner | 83 |
14 | 49 |
| Bailey Island Motel |
Bailey Island | 40 |
13 | 24 |
| Wymans of Maine-Cherryfield Factory |
Milbridge | 95 |
13 | 18 |
| Whites Beach Campground |
Brunswick | 113 |
12 | 59 |
| Stonington Water Company |
Winterport | 683 |
12 | 33 |
| St. John's River Club Utilities |
Gray | 170 |
11 | 29 |
| First United Pentecostal Church-Augusta |
Augusta | 25 |
10 | 197 |
| Sennebec Lake Campground 1-Lodge |
Appleton | 243 |
10 | 62 |
| Spinsfield Commons |
Bangor | 45 |
10 | 58 |
| West Paris Water District |
West Paris | 540 |
10 | 43 |
| Crystal Spring Estates |
Dover Foxcroft | 40 |
10 | 29 |
| Hallowell Road Mobile Home Park |
Wiscasset | 25 |
10 | 27 |
| Mdoc State Park-Camden Hills |
Bangor | 1,573 |
10 | 24 |
| Poland Country Village MHP Inc |
East Poland | 140 |
10 | 21 |
| South Berwick Water District |
South Berwick | 3,722 |
10 | 17 |
| Trains Tavern |
Lebanon | 72 |
9 | 168 |
| Recompence Shore-Wolfes Neck Farm |
Freeport | 185 |
9 | 43 |
| Acadia Sunnyside Motel & Cottages |
Bar Harbor | 40 |
9 | 30 |
| Mrb 3 - Hall |
Hanover | 75 |
9 | 29 |
| Pittsfield Water Dept |
Winterport | 3,228 |
9 | 21 |
| Chop Point (Greenhouse) |
Woolwich | 84 |
9 | 18 |
| Village at Rockport #1 |
Camden | 30 |
9 | 9 |
| Deans Motor Lodge |
Portage | 175 |
8 | 146 |
| Lister Knowlton Post 9389 Vfw |
Caribou | 25 |
8 | 113 |
| Acadia Lobster Co |
Trenton | 222 |
8 | 83 |
| Highview Christian Academy |
Charleston | 95 |
8 | 80 |
| Aragosta at Goose Cove |
Deer Isle | 226 |
8 | 68 |
| Ironbound Restaurant & Inn |
Hancock | 179 |
8 | 60 |
| Chebeague Recreation Center |
Chebeague Island | 25 |
8 | 55 |
| Natanis Point Campground |
New Sharon | 160 |
8 | 51 |
| Somerset Elementary School |
Newport | 170 |
8 | 43 |
| New England Frontier Camp |
Lovell | 100 |
8 | 43 |
| Swan Island Wma |
Sidney | 43 |
8 | 35 |
| Sunday River-Jordan Hotel |
Newry | 80 |
8 | 19 |
| Camp Beech Cliff |
Mount Desert | 350 |
8 | 17 |
| Hemlocks Camping Area |
Poland | 185 |
7 | 75 |
| Sues Cobscook Bay Cafe |
Edmunds Twp | 90 |
7 | 65 |
| The Outpost |
Gorham | 240 |
7 | 62 |
| Southwest Harbor Water & Sewer District |
Southwest Harbor | 2,480 |
7 | 41 |
| The Lookout Inn Incorporated |
North Brooklin | 135 |
7 | 37 |
| Fairlawn Country Club Concession |
Auburn | 424 |
7 | 33 |
| Rippleffect Inc-Cow Island |
Portland | 159 |
7 | 29 |
| Rsu 10 Hartford-Sumner Elementary School |
Rumford | 342 |
7 | 28 |
| Msad 61 Lake Region Middle School |
Bridgton | 400 |
7 | 24 |
| Sunday River-Sunrise Condo |
Bethel | 160 |
7 | 24 |
| Twin Ponds Lodge |
Waterville | 75 |
7 | 21 |
| Camp Modin-Pioneer Bunkhouse |
Belgrade | 25 |
7 | 20 |
| Gaelic Square Housing |
Bangor | 50 |
7 | 18 |
| Rsu 64 Central Middle & High School |
Corinth | 615 |
7 | 17 |
| Hannaford Ossipee 8159 |
Portland | 30 |
7 | 12 |
| Passamaquoddy Water District |
Eastport | 2,125 |
7 | 11 |
| Msad 06 Frank Jewett School |
Buxton | 60 |
7 | 7 |
| Thornton Family Campground |
Orrington | 140 |
6 | 87 |
| Sullivan Town Office |
Sullivan | 35 |
6 | 69 |
| Hingham Heights |
Hermon | 140 |
6 | 52 |
| Monhegan Water Company |
Monhegan | 300 |
6 | 47 |
| Bayview Cabins Condominium |
Gorham | 35 |
6 | 47 |
| Mdoc State Park-Rangeley Managers Cabin |
Augusta | 25 |
6 | 44 |
| Berwick Water Department |
Saco | 2,470 |
6 | 39 |
| Canal Bridge Camping Area |
Bangor | 125 |
6 | 34 |
| Coastal Woods Campground |
Wells | 312 |
6 | 32 |
| Mdoc State Park-Damariscotta Lake |
Bangor | 303 |
6 | 32 |
| Blue Hill Terrace |
Stonington | 60 |
6 | 32 |
| Buckfield Village Corporation |
Buckfield | 425 |
6 | 28 |
| Canton Water District |
Canton | 243 |
6 | 28 |
| Damariscotta Lake Cottage Condo Assoc |
Brunswick | 55 |
6 | 25 |
| Radiodetection |
Raymond | 70 |
6 | 19 |
| Bucksport/Fort Knox Koa |
Orland | 176 |
6 | 17 |
| Hancock Lumber-Bethel Planer Mill |
Casco | 40 |
6 | 15 |
| Sunny Gables - Glenburn Housing |
Bangor | 60 |
6 | 14 |
| Harmon Pines Development |
Portland | 50 |
6 | 14 |
| Sunrise Serenity Tp |
Sabattus | 25 |
6 | 14 |
| Acadia Healthcare/Sweetser |
Bangor | 25 |
6 | 10 |
| Stonington Manor |
Stonington | 44 |
6 | 9 |
| Aos 96 Fort Obrien School |
Machias | 62 |
6 | 8 |
| Livermore Falls Water District |
Livermore Falls | 2,995 |
6 | 7 |
| Wild Acadia Camping Resort |
Mount Desert | 225 |
6 | 7 |
| Libbys Sporting Camps Inc |
Ashland | 25 |
5 | 73 |
| Revision Energy Montville |
South Portland | 42 |
5 | 65 |
| Freeport/Durham Koa |
Durham | 314 |
5 | 62 |
| Mdoc State Park-Bradbury Mtn |
Augusta | 350 |
5 | 59 |
| Monson Utilities District |
Monson | 298 |
5 | 50 |
| Blueberry Cove Camp |
Lincolnville | 89 |
5 | 48 |
| New England Music Camp-The Bowl |
Sidney | 25 |
5 | 47 |
| Grants Kennebago Camps |
Rangeley | 233 |
5 | 46 |
| Winslow Park #2-Lower |
Freeport | 133 |
5 | 38 |
| Living Waters #1 |
Danforth | 137 |
5 | 35 |