Maine Drinking Water Compliance Records
386 water systems serving 691,453 people. 4,099 historical EPA violation records in the Q2 2026 snapshot.
TapScore Compliance-History Grades
A
240
62%
B
64
17%
C
59
15%
D
19
5%
F
4
1%
386
Water Systems
691,453
Population Served
4,099
Historical Records
779
Health-Based (All Years)
Systems With the Most Recent EPA Records
CREST VIEW MANOR
38 served65 historical records25 recent
C
RAYMOND WOODS TOWNHOUSES
50 served27 historical records23 recent
F
NORTH BERWICK WATER DISTRICT
2,125 served31 historical records22 recent
C
MILLSTONE APARTMENTS
156 served101 historical records20 recent
C
LORING WOODS PARK
55 served50 historical records20 recent
C
WHITE TAIL RIDGE ASSOCIATION
123 served59 historical records19 recent
C
SOUTH SLOPE ESTATES MHP
100 served36 historical records18 recent
C
US COAST GUARD STATION-JONESPORT
25 served34 historical records16 recent
F
BOUDREAU TRAILER PARK
50 served153 historical records16 recent
D
HINGHAM HEIGHTS
90 served42 historical records16 recent
D
Large Systems With No Recent Records
PORTLAND WATER DISTRICT-GREATER
135,068 served1 historical record
A
MAINE WATER COMPANY BIDDEFORD SACO DIV
42,508 served1 historical record
A
KENNEBUNK, KENNEBUNKPORT & WELLS WD
35,663 served2 historical records
A
BANGOR WATER DISTRICT
27,298 served2 historical records
A
LEWISTON WATER & SEWER DIVISION
23,720 served3 historical records
A
KENNEBEC WATER DISTRICT
22,060 served1 historical record
A
MAINE WATER COMPANY CAMDEN & ROCKLAND
21,315 served1 historical record
A
BRUNSWICK/TOPSHAM WATER DISTRICT
18,863 served0 historical records
A
AUBURN WATER DISTRICT
17,245 served8 historical records
A
KITTERY WATER DISTRICT
14,478 served2 historical records
A
Largest Water Systems in Maine
| Water System | Grade | Population | Historical Records |
|---|---|---|---|
| PORTLAND WATER DISTRICT-GREATER | A | 135,068 | 1 |
| MAINE WATER COMPANY BIDDEFORD SACO DIV | A | 42,508 | 1 |
| KENNEBUNK, KENNEBUNKPORT & WELLS WD | A | 35,663 | 2 |
| BANGOR WATER DISTRICT | A | 27,298 | 2 |
| LEWISTON WATER & SEWER DIVISION | A | 23,720 | 3 |
| KENNEBEC WATER DISTRICT | A | 22,060 | 1 |
| MAINE WATER COMPANY CAMDEN & ROCKLAND | A | 21,315 | 1 |
| BRUNSWICK/TOPSHAM WATER DISTRICT | A | 18,863 | 0 |
| AUBURN WATER DISTRICT | A | 17,245 | 8 |
| KITTERY WATER DISTRICT | A | 14,478 | 2 |
| SANFORD WATER DISTRICT | A | 14,328 | 1 |
| GREATER AUGUSTA UTILITY DISTRICT | B | 13,750 | 4 |
| YORK WATER DISTRICT | A | 13,675 | 0 |
| BATH WATER DISTRICT | A | 9,205 | 3 |
| GARDINER WATER DISTRICT | B | 9,000 | 13 |
| BREWER WATER DEPARTMENT | A | 8,860 | 4 |
| BOOTHBAY REGION WATER DISTRICT | A | 8,448 | 2 |
| YARMOUTH WATER DISTRICT | A | 8,000 | 1 |
| OLD TOWN WATER DISTRICT | A | 7,648 | 1 |
| LISBON WATER DEPARTMENT | C | 6,643 | 12 |
Contaminants in Maine
Lead in MaineArsenic in MaineNitrate in MaineFluoride in MainePFOS in MainePFOA in MaineTHMs in MaineHAA5 in Maine
Cities in Maine
STANDISH(4)PORTLAND(12)GORHAM(3)SCARBOROUGH(4)CUMBERLAND(3)RAYMOND(2)WESTBROOK(2)WINDHAM(2)SOUTH PORTLAND(1)CAPE ELIZABETH(1)FALMOUTH(1)POLAND(20)SACO(3)BIDDEFORD(2)WELLS(8)ORRINGTON(3)CLIFTON(2)EDDINGTON(2)VASSALBORO(4)KENNEBUNK(2)KENNEBUNKPORT(1)HAMPDEN(3)BANGOR(24)BRUNSWICK(5)HERMON(7)VEAZIE(1)OAKLAND(4)LISBON(2)LEWISTON(2)FAIRFIELD(4)WATERVILLE(5)WARREN(2)WINSLOW(1)CAMDEN(8)ROCKPORT(6)THOMASTON(3)OWLS HEAD(2)ROCKLAND(1)TOPSHAM(5)AUBURN(3)WINTHROP(5)SANFORD(4)KITTERY(1)AUGUSTA(6)YORK(2)MANCHESTER(2)CHELSEA(1)RICHMOND(7)WISCASSET(5)WOOLWICH(2)HOLDEN(6)BATH(2)WEST BATH(1)WINTERPORT(5)BREWER(5)GARDINER(1)BOOTHBAY(1)YARMOUTH(1)NORTH YARMOUTH(1)OLD TOWN(4)BERWICK(3)PRESQUE ISLE(6)SKOWHEGAN(3)NORTHPORT(2)ORONO(8)BELFAST(4)EMBDEN(2)MADISON(1)ANSON(1)MILLINOCKET(1)HOULTON(4)BRIDGTON(4)BAR HARBOR(2)CARIBOU(6)FARMINGTON(2)PITTSFIELD(2)WATERBORO(5)ELLSWORTH(4)RUMFORD(1)SOUTH BERWICK(2)FREEPORT(6)NORTH WATERBORO(1)LIVERMORE FALLS(2)NORWAY(2)SOUTH PARIS(2)LINCOLN(1)LIVERMORE(1)PARIS(1)WILTON(1)CALAIS(1)SEARSPORT(1)MADAWASKA(1)NORTHEAST HARBOR(2)MOUNT DESERT(2)SOUTHWEST HARBOR(1)SOUTHWEST HBR(1)GRAY(1)DOVER-FOXCROFT(2)MEXICO(1)DEXTER(1)