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Maine Tap Water Quality

EPA water quality data for 150 community water systems serving 429,495+ people in Maine. Click any system to see violations, lead testing results, and a safety grade.

Maine relies almost entirely on surface water from pristine lakes and streams for public water supply. Naturally occurring arsenic in bedrock groundwater is the state's biggest drinking water concern, particularly for private wells. PFAS contamination from biosolids spread on farmland has affected communities across central Maine.

Cities in Maine

PortlandLewistonBangorSouth PortlandAuburnBiddefordSanfordSacoWestbrookAugustaBrunswickWatervilleOrono
MAINE WATER COMPANY BIDDEFORD SACO DIV POLAND, ME · 42,508 people · Surface Water KENNEBUNK, KENNEBUNKPORT & WELLS WD KENNEBUNK, ME · 35,663 people · Surface Water BANGOR WATER DISTRICT BANGOR, ME · 27,298 people · Surface Water LEWISTON WATER & SEWER DIVISION LEWISTON, ME · 23,720 people · Surface Water KENNEBEC WATER DISTRICT WATERVILLE, ME · 22,060 people · Surface Water MAINE WATER COMPANY CAMDEN & ROCKLAND POLAND, ME · 21,315 people · Surface Water BRUNSWICK/TOPSHAM WATER DISTRICT TOPSHAM, ME · 18,863 people · Groundwater AUBURN WATER DISTRICT LISBON, ME · 17,245 people · Surface Water KITTERY WATER DISTRICT KITTERY, ME · 14,478 people · Surface Water GREATER AUGUSTA UTILITY DISTRICT AUGUSTA, ME · 13,750 people · Groundwater BATH WATER DISTRICT BATH, ME · 9,290 people · Surface Water GARDINER WATER DISTRICT GARDINER, ME · 9,000 people · Groundwater BREWER WATER DEPARTMENT BREWER, ME · 8,860 people · Surface Water BOOTHBAY REGION WATER DISTRICT BOOTHBAY, ME · 8,448 people · Surface Water LISBON WATER DEPARTMENT LISBON, ME · 6,643 people · Groundwater BELFAST WATER DISTRICT BELFAST, ME · 5,698 people · Groundwater ANSON AND MADISON WATER DISTRICT RICHMOND, ME · 5,568 people · Surface Water MAINE WATER COMPANY MILLINOCKET DIVISION POLAND, ME · 5,400 people · Surface Water HOULTON WATER COMPANY HOULTON, ME · 4,735 people · Groundwater HAMPDEN WATER DISTRICT HAMPDEN, ME · 4,628 people · Surface Water Purchased TOWN OF BAR HARBOR- WATER DIVISION BAR HARBOR, ME · 4,443 people · Surface Water FARMINGTON VILLAGE CORP WATER DEPT FARMINGTON, ME · 4,050 people · Groundwater CARIBOU UTILITIES DISTRICT CARIBOU, ME · 3,943 people · Groundwater ELLSWORTH WATER DEPARTMENT ELLSWORTH, ME · 3,910 people · Surface Water BRIDGTON WATER DISTRICT BRIDGTON, ME · 3,660 people · Groundwater LAKE ARROWHEAD COMMUNITY INC NORTH WATERBORO, ME · 3,500 people · Groundwater LINCOLN WATER DISTRICT LINCOLN, ME · 3,020 people · Groundwater LIVERMORE FALLS WATER DISTRICT LIVERMORE FALLS, ME · 2,995 people · Surface Water BERWICK WATER DEPARTMENT SACO, ME · 2,845 people · Surface Water CALAIS WATER DEPT WINTERPORT, ME · 2,775 people · Groundwater MADAWASKA WATER DISTRICT MADAWASKA, ME · 2,738 people · Groundwater MAINE WATER COMPANY FREEPORT DIVISION POLAND, ME · 2,700 people · Groundwater GRAY WATER DISTRICT GRAY, ME · 2,468 people · Groundwater MEXICO WATER DISTRICT MEXICO, ME · 2,425 people · Groundwater DOVER-FOXCROFT WATER DISTRICT DOVER-FOXCROFT, ME · 2,400 people · Surface Water DEXTER UTILITY DISTRICT DEXTER, ME · 2,338 people · Surface Water HALLOWELL WATER DISTRICT HALLOWELL, ME · 2,300 people · Groundwater GREAT SALT BAY SANITARY DISTRICT DAMARISCOTTA, ME · 2,143 people · Surface Water EAST MILLINOCKET WATER WORKS EAST MILLINOCKET, ME · 2,133 people · Groundwater PASSAMAQUODDY WATER DISTRICT EASTPORT, ME · 2,125 people · Surface Water NORTH BERWICK WATER DISTRICT NORTH BERWICK, ME · 2,125 people · Groundwater FRYEBURG WATER COMPANY POLAND, ME · 2,085 people · Groundwater FORT FAIRFIELD UTILITIES DISTRICT FORT FAIRFIELD, ME · 2,025 people · Surface Water MECHANIC FALLS WATER DEPT MECHANIC FALLS, ME · 2,010 people · Groundwater NORWAY WATER DISTRICT NORWAY, ME · 2,000 people · Groundwater NEWPORT WATER DISTRICT NEWPORT, ME · 1,900 people · Surface Water BETHEL WATER DISTRICT RICHMOND, ME · 1,813 people · Groundwater LUBEC WATER DISTRICT LUBEC, ME · 1,775 people · Groundwater MILO WATER DISTRICT MILO, ME · 1,720 people · Surface Water MAINE WATER COMPANY BUCKSPORT DIVISION POLAND, ME · 1,700 people · Surface Water BAILEYVILLE UTILITIES DISTRICT WINTERPORT, ME · 1,688 people · Groundwater MOUNT DESERT WATER DIST NORTH NORTHEAST HARBOR, ME · 1,623 people · Surface Water FORT KENT W & W DEPARTMENT FORT KENT, ME · 1,578 people · Groundwater GUILFORD-SANGERVILLE UTILITIES DISTRICT SANGERVILLE, ME · 1,535 people · Groundwater MARS HILL AND BLAINE WATER COMPANY MARS HILL, ME · 1,500 people · Groundwater DIXFIELD WATER & SEWER DEPT DIXFIELD, ME · 1,415 people · Groundwater MACHIAS WATER COMPANY MACHIAS, ME · 1,390 people · Groundwater MAINE WATER COMPANY GREENVILLE DIVISION POLAND, ME · 1,335 people · Groundwater JACKMAN UTILITY DISTRICT JACKMAN, ME · 1,125 people · Surface Water MAINE WATER COMPANY KEZAR FALLS DIVISION POLAND, ME · 1,115 people · Groundwater BINGHAM WATER DISTRICT RICHMOND, ME · 1,075 people · Groundwater NORRIDGEWOCK WATER DISTRICT NORRIDGEWOCK, ME · 1,055 people · Groundwater MAINE WATER COMPANY HARTLAND DIVISION POLAND, ME · 1,043 people · Groundwater HOWLAND WATER DEPARTMENT HOWLAND, ME · 1,025 people · Groundwater Purchased CLINTON WATER DISTRICT PITTSFIELD, ME · 1,013 people · Groundwater CASTINE WATER DEPARTMENT CASTINE, ME · 983 people · GWUDI JAY VILLAGE WATER DISTRICT JAY, ME · 975 people · Surface Water Purchased KINGFIELD WATER DISTRICT KINGFIELD, ME · 950 people · Groundwater LIMESTONE WATER & SEWER DISTRICT LIMESTONE, ME · 875 people · Groundwater HARRISON WATER DISTRICT HARRISON, ME · 863 people · Groundwater ALFRED WATER DISTRICT ALFRED, ME · 783 people · Groundwater FRIENDLY VILLAGE OF GORHAM MHP GORHAM, ME · 763 people · Groundwater CORNISH WATER DISTRICT CORNISH, ME · 758 people · Groundwater NORTH HAVEN WATER DEPARTMENT NORTH HAVEN, ME · 740 people · Surface Water BOWDOINHAM WATER DISTRICT BOWDOINHAM, ME · 738 people · Groundwater KNIGHTS HILL ASSOCIATION BRIDGTON, ME · 718 people · Groundwater ASHLAND WATER & SEWER DISTRICT ASHLAND, ME · 713 people · Groundwater BROWNVILLE JCT WATER DEPT BROWNVILLE, ME · 663 people · Groundwater LIMERICK WATER DISTRICT LIMERICK, ME · 625 people · Groundwater MONMOUTH WATER ASSOCIATION WINTHROP, ME · 588 people · Surface Water Purchased EAGLE LAKE WATER & SEWER DISTRICT EAGLE LAKE, ME · 585 people · Groundwater PINE TREE MOBILE ESTATES FARMINGTON HILLS, MI · 560 people · Groundwater NORTHPORT VILLAGE CORP WATER DEPT WISCASSET, ME · 550 people · Groundwater Purchased INDIAN TOWNSHIP TRIBAL WATER SYSTEM INDIAN TOWNSHIP, ME · 535 people · Groundwater NORTH JAY WATER DISTRICT JAY, ME · 500 people · Surface Water Purchased ISLAND FALLS WATER DEPT ISLAND FALLS, ME · 475 people · Groundwater MOUNTAIN VIEW CORRECTIONAL FACILITY CHARLESTON, ME · 468 people · Groundwater FRANKLIN WATER DEPARTMENT FRANKLIN, ME · 443 people · Groundwater BUCKFIELD VILLAGE CORPORATION BUCKFIELD, ME · 425 people · Surface Water KEYWOOD MANOR MHP LLC ALFRED, ME · 411 people · Groundwater MILBRIDGE WATER DISTRICT MILBRIDGE, ME · 405 people · Groundwater CEDAR HAVEN MHC NORTHBROOK, IL · 395 people · Groundwater DANFORTH WATER DISTRICT DANFORTH, ME · 373 people · Groundwater RIVERSIDE TERRACE CANAAN, ME · 350 people · Groundwater MOSCOW WATER DISTRICT BINGHAM, ME · 313 people · Groundwater Purchased LONG POND WATER DISTRICT SULLIVAN, ME · 308 people · Surface Water COLD SPRING WATER COMPANY LAMOINE, ME · 305 people · Groundwater MONSON UTILITIES DISTRICT MONSON, ME · 298 people · Groundwater COLONIAL MOBILE HOME PARK LEBANON, ME · 270 people · Groundwater ANDOVER WATER DISTRICT ANDOVER, ME · 265 people · Groundwater BROWNVILLE WATER DEPARTMENT BROWNVILLE, ME · 253 people · Groundwater NEW SHARON WATER DISTRICT RICHMOND, ME · 245 people · Groundwater TOPSHAM MOBILE HOME PARK INC TOPSHAM, ME · 243 people · Groundwater CANTON WATER DISTRICT CANTON, ME · 243 people · Surface Water MARSHWOOD ESTATES SPARTA, NJ · 233 people · Groundwater FARMINGTON FALLS STD WATER DIST FARMINGTON FALLS, ME · 225 people · Groundwater EAST VASSALBORO WATER COMPANY LLC KALISPELL, MT · 205 people · Groundwater PLEASANT ACRES ESTATES PALMYRA, ME · 193 people · Groundwater SHADY OAKS MOBILE HOME PARK EL SEGUNDO, CA · 185 people · Groundwater STREAMSIDE PINES MOBILE HOME PARK BANGOR, ME · 183 people · Groundwater LORING DEVELOPMENT AUTHORITY WISCASSET, ME · 180 people · Surface Water ESTES LAKE MOBILE HOME PARK SANFORD, ME · 172 people · Groundwater BEGIN TRAILER PARK SABATTUS, ME · 170 people · Groundwater ADDISON POINT WATER DISTRICT ADDISON, ME · 168 people · Groundwater SUN HANCOCK HEIGHTS- EAST BANGOR, ME · 158 people · Groundwater COUNTRY MOBILE HOME PARK OLD TOWN, ME · 155 people · Groundwater WARDTOWN PARK FREEPORT, ME · 150 people · Groundwater DOVER REALTY VENTURES MHP LLC YORK, PA · 145 people · Groundwater MORRILL VILLAGE WATER DISTRICT MORRILL, ME · 143 people · Groundwater HILLVIEW ESTATES TURNER, ME · 140 people · Groundwater POLAND COUNTRY VILLAGE MHP INC EAST POLAND, ME · 140 people · Groundwater CATHANCE TRAILER PARK TOPSHAM, ME · 135 people · Groundwater HIDDEN LAKE VILLAGE LLC NORTH OGDEN, UT · 133 people · Groundwater MOUNTAINSIDE MOBILE HOME PARK THOMASTON, ME · 130 people · Groundwater HIGHPINE MOBILE HOME COURT EMBDEN, ME · 130 people · Groundwater NEW PORTLAND WATER DISTRICT KINGFIELD, ME · 120 people · Groundwater LIMERICK MOBILE HOME PARK LLC LIMERICK, ME · 115 people · Groundwater PINEWOOD PARK GREAT NECK, NY · 108 people · Groundwater CHARTER OAKS VILLAGE COOPERATIVE WOONSOCKET, RI · 105 people · Groundwater VILLAGE GREEN MHP BRISTOL, NH · 105 people · Groundwater RIVERSIDE COURT HOULTON, ME · 100 people · Groundwater GRANDEUR MOBILE HOME ESTATES CARMEL, ME · 100 people · Groundwater NARRAGUAGUS ESTATES BANGOR, ME · 97 people · Groundwater CARIBOU STREAM MOBILE HOME PK HOULTON, ME · 95 people · Groundwater MOUNTAIN VIEW TRAILER PARK FORT KENT, ME · 95 people · Groundwater OAKWOOD MOBILE COMMUNITY ASSOCIATION ALFRED, ME · 95 people · Groundwater PINEWOOD ACRES TRAILER PARK SABATTUS, ME · 95 people · Groundwater DEL-WOOD TRAILER PARK BANGOR, ME · 90 people · Groundwater EVERGREEN COMMUNITY MH PARK BANGOR, ME · 90 people · Groundwater WOODED GROVE MOBILE HOME PARK KENDUSKEAG, ME · 90 people · Groundwater DINGLEY SPRING ESTATES GORHAM, ME · 90 people · Groundwater MACHIAS TRAILER PARK MACHIAS, ME · 89 people · Groundwater PINE RIDGE VILLAGE SOUTH PARIS, ME · 85 people · Groundwater WHIPPOORWILL HILL MOBILE HOME BANGOR, ME · 85 people · Groundwater BLUE ROCK COOPERATIVE WOONSOCKET, RI · 83 people · Groundwater HEBRON WATER COMPANY TURNER, ME · 83 people · Surface Water PINE VILLAGE MHP HENDERSON, NV · 80 people · Groundwater WINDSWEPT ESTATES MH PARK BANGOR, ME · 75 people · Groundwater HOWARDS TRAILER PARK SWANVILLE, ME · 75 people · Groundwater SQUIRE COURT LLC PORTLAND, ME · 75 people · Groundwater