| JAY VILLAGE WATER DISTRICT | JAY, ME | 975 | 124 | — |
| SOUTH FREEPORT WATER DISTRICT | POLAND, ME | 960 | 8 | — |
| COOKS LOBSTER HOUSE | BAILEY ISLAND, ME | 950 | 41 | — |
| KINGFIELD WATER DISTRICT | KINGFIELD, ME | 950 | 27 | — |
| MAINE WATER COMPANY HARTLAND DIVISION | POLAND, ME | 910 | 93 | — |
| SUNDAY RIVER BREWING COMPANY | NEWRY, ME | 889 | 31 | — |
| US NPS JORDAN POND HSE (18) | TRENTON, ME | 888 | 13 | — |
| LIMESTONE WATER & SEWER DISTRICT | LIMESTONE, ME | 875 | 78 | — |
| MOUNT DESERT WATER DIST -SEAL | NORTHEAST HARBOR, ME | 865 | 24 | — |
| HARRISON WATER DISTRICT | HARRISON, ME | 863 | 24 | — |
| RSU 38 MARANACOOK COMMUNITY SCHOOL | READFIELD, ME | 816 | 141 | — |
| MAINE WATER COMPANY WARREN DIVISION | POLAND, ME | 815 | 4 | — |
| LAKE PEMAQUID CAMPGROUND | DAMARISCOTTA, ME | 808 | 40 | — |
| MSAD 06 BONNY EAGLE MIDDLE SCHOOL | BUXTON, ME | 800 | 43 | Detected |
| MDOC STATE PARK-RANGE POND | AUGUSTA, ME | 800 | 16 | — |
| MDOC STATE PARK-POPHAM BEACH WEST | AUGUSTA, ME | 800 | 30 | — |
| ALFRED WATER DISTRICT | ALFRED, ME | 783 | 132 | — |
| FRIENDLY VILLAGE OF GORHAM MHP | GORHAM, ME | 763 | 51 | — |
| WINTERPORT WATER DISTRICT | WINTERPORT, ME | 763 | 24 | — |
| ASTICOU INN | NORTHEAST HARBOR, ME | 760 | 6 | — |
| RSU 35 MARSHWOOD HIGH SCHOOL | ELIOT, ME | 760 | 35 | — |
| CAMP SUNSHINE | CASCO, ME | 755 | 58 | — |
| CORNISH WATER DISTRICT | CORNISH, ME | 753 | 15 | — |
| SUNDAY RIVER-UPPER CISTERN SYSTEM | NEWRY, ME | 750 | 14 | — |
| SUNDAY RIVER-PEAK LODGE SYSTEM | NEWRY, ME | 750 | 34 | — |
| MATTERHORN SKI BAR | NEWRY, ME | 750 | 44 | — |
| AUGUSTA COUNTRY CLUB | MANCHESTER, ME | 750 | 85 | — |
| NORTH HAVEN WATER DEPARTMENT | NORTH HAVEN, ME | 740 | 734 | — |
| BOWDOINHAM WATER DISTRICT | BOWDOINHAM, ME | 738 | 2 | — |
| KNIGHTS HILL ASSOCIATION | BRIDGTON, ME | 718 | 35 | — |
| ASHLAND WATER & SEWER DISTRICT | ASHLAND, ME | 713 | 64 | — |
| MSAD 52 LEAVITT AREA HIGH SCHOOL | TURNER, ME | 712 | 118 | — |
| CAMP LAUREL-LODGE | LAKE WORTH, ME | 710 | 4 | — |
| LOST VALLEY SKI AREA | AUBURN, ME | 710 | 18 | — |
| FALL LINE CONDOS @ SUNDAY RIVER | BETHEL, ME | 710 | 20 | — |
| SHAWNEE PEAK #1 MAIN LODGE | BRIDGTON, ME | 700 | 16 | — |
| MSAD 61 LAKE REGION HIGH SCHOOL | BRIDGTON, ME | 700 | 295 | — |
| WINTER HARBOR WATER DISTRICT | WINTER HARBOR, ME | 700 | 52 | — |
| HERMIT ISLAND CG #1 | BATH, ME | 695 | 16 | — |
| SEA-VU SOUTH CAMPGROUND | WELLS, ME | 688 | 16 | — |
| WASHBURN WATER & SEWER DISTRICT | WASHBURN, ME | 688 | 147 | — |
| ERSKINE ACADEMY | CHINA, ME | 685 | 10 | — |
| STONINGTON WATER COMPANY | WINTERPORT, ME | 683 | 158 | — |
| MT ABRAM LLC-MAIN LODGE | GREENWOOD, ME | 675 | 99 | — |
| BULLWINKLES RESTAURANT | CARRABASSETT VALLEY, ME | 675 | 8 | — |
| RSU 40 MEDOMAK VALLEY HIGH SCHOOL | UNION, ME | 669 | 64 | — |
| BROWNVILLE JCT WATER DEPT | BROWNVILLE, ME | 663 | 8 | — |
| SEA-VU WEST CAMPGROUND | WELLS, ME | 660 | 20 | — |
| MDOC STATE PARK-MT BLUE | AUGUSTA, ME | 652 | 19 | — |
| CAMP LAUREL-SOUTH | CASCO, ME | 650 | 11 | — |