U.S. water systems

Maine Water Systems

Maine

778 community water systems on record — 386 active, 392 inactive.

Every active community water system nationwide must produce a Consumer Confidence Report under the EPA's revised rule, effective for reports due July 1, 2027.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Maine’s official records. Always confirm current status with Maine before making decisions based on this information.

Counties in Maine

Androscoggin County (36)Aroostook County (72)Cumberland County (65)Franklin County (17)Hancock County (50)Kennebec County (53)Knox County (21)Lincoln County (21)Oxford County (28)Penobscot County (84)Piscataquis County (11)Sagadahoc County (13)Somerset County (28)Waldo County (24)Washington County (35)York County (67)

All community water systems in Maine

System name	Mailing city	Population served	Status
PORTLAND WATER DISTRICT-GREATER	PORTLAND	135,068	Active
MAINE WATER COMPANY BIDDEFORD SACO DIV	POLAND	42,508	Active
KENNEBUNK, KENNEBUNKPORT & WELLS WD	KENNEBUNK	35,663	Active
BANGOR WATER DISTRICT	BANGOR	27,298	Active
LEWISTON WATER & SEWER DIVISION	LEWISTON	23,720	Active
KENNEBEC WATER DISTRICT	WATERVILLE	22,060	Active
MAINE WATER COMPANY CAMDEN & ROCKLAND	POLAND	21,315	Active
BRUNSWICK/TOPSHAM WATER DISTRICT	TOPSHAM	18,863	Active
AUBURN WATER DISTRICT	LISBON	17,245	Active
KITTERY WATER DISTRICT	KITTERY	14,478	Active
SANFORD WATER DISTRICT	SANFORD	14,328	Active
GREATER AUGUSTA UTILITY DISTRICT	AUGUSTA	13,750	Active
YORK WATER DISTRICT	YORK	13,675	Active
LORING AIR FORCE BASE	LORING AFB	10,000	Inactive
BATH WATER DISTRICT	BATH	9,205	Active
GARDINER WATER DISTRICT	GARDINER	9,000	Active
BREWER WATER DEPARTMENT	BREWER	8,860	Active
BOOTHBAY REGION WATER DISTRICT	BOOTHBAY	8,448	Active
YARMOUTH WATER DISTRICT	YARMOUTH	8,000	Active
OLD TOWN WATER DISTRICT	OLD TOWN	7,648	Active
LISBON WATER DEPARTMENT	LISBON	6,643	Active
PRESQUE ISLE UTILITIES DISTRICT	PRESQUE ISLE	6,128	Active
MAINE WATER COMPANY SKOWHEGAN DIVISION	POLAND	6,105	Active
ORONO-VEAZIE WATER DISTRICT	ORONO	5,793	Active
BELFAST WATER DISTRICT	BELFAST	5,698	Active
ANSON AND MADISON WATER DISTRICT	RICHMOND	5,568	Active
MAINE WATER COMPANY MILLINOCKET DIVISION	POLAND	5,400	Active
HOULTON WATER COMPANY	HOULTON	4,735	Active
HAMPDEN WATER DISTRICT	HAMPDEN	4,628	Active
TOWN OF BAR HARBOR- WATER DIVISION	BAR HARBOR	4,443	Active
FARMINGTON VILLAGE CORP WATER DEPT	FARMINGTON	4,050	Active
RUMFORD WATER DISTRICT	RUMFORD	4,050	Active
CARIBOU UTILITIES DISTRICT	CARIBOU	3,943	Active
ELLSWORTH WATER DEPARTMENT	ELLSWORTH	3,910	Active
SOUTH BERWICK WATER DISTRICT	SOUTH BERWICK	3,722	Active
BRIDGTON WATER DISTRICT	BRIDGTON	3,660	Active
LAKE ARROWHEAD COMMUNITY INC	NORTH WATERBORO	3,500	Active
PITTSFIELD WATER DEPT	WINTERPORT	3,228	Active
LINCOLN WATER DISTRICT	LINCOLN	3,020	Active
LIVERMORE FALLS WATER DISTRICT	LIVERMORE FALLS	2,995	Active
PARIS UTILITY DISTRICT	SOUTH PARIS	2,940	Active
MAINE WATER COMPANY OAKLAND DIVISION	POLAND	2,873	Active
BERWICK WATER DEPARTMENT	SACO	2,845	Active
WILTON WATER DEPARTMENT	WILTON	2,800	Active
CALAIS WATER DEPT	WINTERPORT	2,775	Active
SEARSPORT WATER DISTRICT	SEARSPORT	2,763	Active
WINTHROP UTILITIES DISTRICT	WINTHROP	2,750	Active
MADAWASKA WATER DISTRICT	MADAWASKA	2,738	Active
MAINE WATER COMPANY FREEPORT DIVISION	POLAND	2,700	Active
PORTLAND WATER DIST/N. WINDHAM	PORTLAND	2,505	Inactive
SOUTHWEST HARBOR WATER & SEWER DISTRICT	SOUTHWEST HARBOR	2,480	Active
GRAY WATER DISTRICT	GRAY	2,468	Active
MEXICO WATER DISTRICT	MEXICO	2,425	Active
DOVER-FOXCROFT WATER DISTRICT	DOVER-FOXCROFT	2,400	Active
DEXTER UTILITY DISTRICT	DEXTER	2,338	Active
HALLOWELL WATER DISTRICT	HALLOWELL	2,300	Active
VAN BUREN WATER DISTRICT	VAN BUREN	2,190	Active
GREAT SALT BAY SANITARY DISTRICT	DAMARISCOTTA	2,143	Active
EAST MILLINOCKET WATER WORKS	EAST MILLINOCKET	2,133	Active
NORTH BERWICK WATER DISTRICT	NORTH BERWICK	2,125	Active
PASSAMAQUODDY WATER DISTRICT	EASTPORT	2,125	Active
FRYEBURG WATER COMPANY	POLAND	2,085	Active
FORT FAIRFIELD UTILITIES DISTRICT	FORT FAIRFIELD	2,025	Active
MECHANIC FALLS WATER DEPT	MECHANIC FALLS	2,010	Active
NORWAY WATER DISTRICT	NORWAY	2,000	Active
WISCASSET WATER DISTRICT	WISCASSET	1,970	Active
PORTLAND WATER DIST. CUMBERL'D	PORTLAND	1,910	Inactive
NEWPORT WATER DISTRICT	RICHMOND	1,900	Active
BETHEL WATER DISTRICT	RICHMOND	1,813	Active
LUBEC WATER DISTRICT	LUBEC	1,775	Active
SUGARLOAF WATER ASSOCIATION	CARRABASSETT VALLEY	1,730	Active
MILO WATER DISTRICT	MILO	1,720	Active
MAINE WATER COMPANY BUCKSPORT DIVISION	POLAND	1,700	Active
BAILEYVILLE UTILITIES DISTRICT	WINTERPORT	1,688	Active
ANSON WATER DISTRICT	NORTH ANSON	1,625	Inactive
MOUNT DESERT WATER DIST NORTH	NORTHEAST HARBOR	1,623	Active
FORT KENT W & W DEPARTMENT	FORT KENT	1,578	Active
SABATTUS SANITARY DISTRICT	SABATTUS	1,550	Active
GUILFORD-SANGERVILLE UTILITIES DISTRICT	SANGERVILLE	1,535	Active
MARS HILL AND BLAINE WATER COMPANY	MARS HILL	1,500	Active
BOOTHBAY REGION WATER DIST- **INACTIVE	BOOTHBAY	1,450	Inactive
DIXFIELD WATER & SEWER DEPT	DIXFIELD	1,415	Active
MACHIAS WATER COMPANY	MACHIAS	1,390	Active
RICHMOND UTILITIES DISTRICT	RICHMOND	1,390	Active
RANGELEY WATER DISTRICT	RANGELEY	1,378	Active
MAINE WATER COMPANY GREENVILLE DIVISION	POLAND	1,335	Active
BAY BRIDGE ESTATES LLC	SCOTTSDALE	1,222	Inactive
PORTLAND WATER DIST /STANDISH	PORTLAND	1,200	Inactive
JACKMAN UTILITY DISTRICT	JACKMAN	1,125	Active
MAINE WATER COMPANY KEZAR FALLS DIVISION	POLAND	1,115	Active
OXFORD WATER DISTRICT	NORWAY	1,100	Active
BINGHAM WATER DISTRICT	RICHMOND	1,075	Active
WALDOBORO WATER DEPT	POLAND	1,065	Active
SEAL HARBOR WATER CO	SEAL HARBOR	1,060	Inactive
NORRIDGEWOCK WATER DISTRICT	NORRIDGEWOCK	1,055	Active
VINALHAVEN WATER DISTRICT	POLAND	1,053	Active
MAINE WATER COMPANY HARTLAND DIVISION	POLAND	1,043	Active
HOWLAND WATER DEPARTMENT	HOWLAND	1,025	Active
CLINTON WATER DISTRICT	PITTSFIELD	1,013	Active
CASTINE WATER DEPARTMENT	CASTINE	983	Active
JAY VILLAGE WATER DISTRICT	JAY	975	Active
SOUTH FREEPORT WATER DISTRICT	POLAND	960	Active
KINGFIELD WATER DISTRICT	KINGFIELD	950	Active
LIMESTONE WATER & SEWER DISTRICT	LIMESTONE	875	Active
MOUNT DESERT WATER DIST -SEAL	NORTHEAST HARBOR	865	Active
HARRISON WATER DISTRICT	HARRISON	863	Active
MAINE WATER COMPANY WARREN DIVISION	POLAND	815	Active
ALFRED WATER DISTRICT	ALFRED	783	Active
FRIENDLY VILLAGE OF GORHAM MHP	GORHAM	763	Active
WINTERPORT WATER DISTRICT	WINTERPORT	763	Active
CORNISH WATER DISTRICT	CORNISH	758	Active
GARDINER WATER DISTRICT-HAYFORD HEIGHTS	GARDINER	750	Inactive
NORTH HAVEN WATER DEPARTMENT	NORTH HAVEN	740	Active
BOWDOINHAM WATER DISTRICT	BOWDOINHAM	738	Active
KNIGHTS HILL ASSOCIATION	BRIDGTON	718	Active
ASHLAND WATER & SEWER DISTRICT	ASHLAND	713	Active
WINTER HARBOR WATER DISTRICT	WINTER HARBOR	700	Active
WASHBURN WATER & SEWER DISTRICT	WASHBURN	688	Active
STONINGTON WATER COMPANY	WINTERPORT	683	Active
BROWNVILLE JCT WATER DEPT	BROWNVILLE	663	Active
MT BLUE STANDARD WATER DISTRICT	PHILLIPS	650	Active
LIMERICK WATER DISTRICT	LIMERICK	625	Active
MONMOUTH WATER ASSOCIATION	WINTHROP	588	Active
EAGLE LAKE WATER & SEWER DISTRICT	EAGLE LAKE	585	Active
PINE TREE MOBILE ESTATES	FARMINGTON HILLS	560	Active
NORTHPORT VILLAGE CORP WATER DEPT	—	550	Active
WEST PARIS WATER DISTRICT	WEST PARIS	540	Active
INDIAN TOWNSHIP TRIBAL WATER SYSTEM	INDIAN TOWNSHIP	535	Active
NORTH JAY WATER DISTRICT	JAY	500	Active
QUEEN CITY MOBILE HOME PARK	BANGOR	500	Inactive
STRONG WATER DISTRICT	STRONG	500	Active
THE STRIP - INDIAN TOWNSHIP	PRINCETON	486	Inactive
PORTLAND WATER DISTRICT/STEEP FALLS	PORTLAND	480	Active
EUSTIS WATER DEPARTMENT	STRATTON	475	Active
ISLAND FALLS WATER DEPT	ISLAND FALLS	475	Active
SOLON WATER DISTRICT	SOLON	475	Active
WATERBORO WATER DISTRICT	BIDDEFORD	470	Active
MOUNTAIN VIEW CORRECTIONAL FACILITY	CHARLESTON	468	Active
FRANKLIN WATER DEPARTMENT	FRANKLIN	443	Active
BUCKFIELD VILLAGE CORPORATION	RICHMOND	425	Active
KEYWOOD MANOR MHP LLC	ALFRED	411	Active
MILBRIDGE WATER DISTRICT	MILBRIDGE	405	Active
CASTINE WATER DEPT.-RED SYSTEM	ORLAND	400	Inactive
LAKE ARROWHEAD COMMUNITY, INC.	NORTH WATERBORO	400	Inactive
CEDAR HAVEN MHC	NORTHBROOK	395	Active
NORTH YARMOUTH WATER SYSTEM	YARMOUTH	392	Inactive
TENANTS HARBOR WATER DISTRICT	POLAND	378	Active
DANFORTH WATER DISTRICT	DANFORTH	373	Active
MIDCOAST REGIONAL REDEVELOP AUTHORITY	BRUNSWICK	363	Active
RIVERSIDE TERRACE	CANAAN	350	Active
OXFORD PINES TRAILER PK	MINOT	338	Inactive
PATTEN WATER DEPT	PATTEN	338	Active
PORT CLYDE WATER DISTRICT	PORT CLYDE	330	Active
OLD MARSH CONDOMINIUM	KENNEBUNK	325	Active
MOSCOW WATER DISTRICT	BINGHAM	313	Active
LONG POND WATER DISTRICT	SULLIVAN	308	Active
COLD SPRING WATER COMPANY	LAMOINE	305	Active
BROOKDALE VILLAGE	POLAND	303	Inactive
DUANES RETREAT	—	303	Inactive
QUANTABACOOK WATER DISTRICT	HARRINGTON	303	Active
CARIBOU TRAILER PARK	CARIBOU	300	Inactive
HIGHPINE VILLAGE	ATKINSON	300	Active
MAPLEWOOD MANOR	BRUNSWICK	298	Inactive
MONSON UTILITIES DISTRICT	MONSON	298	Active
PINE RIDGE HUNTON BROOK ASSOCIATION	LIVERMORE FALLS	298	Active
GRAND ISLE WATER SYSTEM	GRAND ISLE	278	Active
COLONIAL MOBILE HOME PARK	LEBANON	270	Active
ANDOVER WATER DISTRICT	ANDOVER	265	Active
OAK HILL PARK	SABATTUS	260	Inactive
GUILLEMETTE BROS MOBILE HOME P	SANFORD	255	Inactive
BROWNVILLE WATER DEPARTMENT	BROWNVILLE	253	Active
WOODLAND HILLS CONDO ASSOCIATION	SOUTH BERWICK	253	Active
NEW SHARON WATER DISTRICT	RICHMOND	245	Active
CANTON WATER DISTRICT	CANTON	243	Active
TOPSHAM MOBILE HOME PARK INC	TOPSHAM	243	Active
MAINE WATER COMPANY UNION DIVISION	POLAND	238	Active
MARSHWOOD ESTATES	SPARTA	233	Active
GOODWINS LODGE/COTTAGES	SEBAGO	231	Inactive
FARMINGTON FALLS STD WATER DIST	FARMINGTON FALLS	225	Active
PINE SPRING ROADS & WATER	SHAPLEIGH	220	Active
GOLDEN GATE TRAILER PARK	PRESQUE ISLE	218	Inactive
PINE CONE MOBILE HOMES CT #1	HOLDEN	218	Inactive
CAINCREST MOBILE HOME PARK	YORK	213	Inactive
EAST VASSALBORO WATER COMPANY LLC	KALISPELL	205	Active
KINNEYS MOBILE HOME COURT	SEARSPORT	200	Inactive
SEAL COVE WATER DIST	SEAL COVE	200	Inactive
US NAVCOMTELSTA-CUTLER	CUTLER	200	Inactive
PLEASANT ACRES ESTATES	PALMYRA	193	Active
SHADY OAKS MOBILE HOME PARK	EL SEGUNDO	185	Active
STREAMSIDE PINES MOBILE HOME PARK	BANGOR	183	Active
LORING DEVELOPMENT AUTHORITY	WISCASSET	180	Active
WEST GATE VILLA MHP	SPRINGFIELD	180	Inactive
ISLAND NURSING HOME	DEER ISLE	173	Inactive
ESTES LAKE MOBILE HOME PARK	SANFORD	172	Active
BEGIN TRAILER PARK	SABATTUS	170	Active
ADDISON POINT WATER DISTRICT	ADDISON	168	Active
SANDY BOTTOM ESTATES MHP	SUDBURY	168	Active
HAWTHORNE HOUSE	FREEPORT	162	Inactive
MT ABRAM CHALET ASSOCIATION	SACO	160	Active
SUN HANCOCK HEIGHTS- EAST	BANGOR	158	Active

Showing the 200 largest of 778 systems on record, by population served. Browse by county above for the full list — every system has its own page, and all of them are in the sitemap.