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Maine Water Quality
1,864 public water systems serving 936,624 people.
Water Systems
1,864
Total Violations
148,796
Violation Rate
93.6%
PFAS Detection
34.1%
14 of 41 tested
Largest Water Systems
PORTLAND WATER DISTRICT-GREATER
PORTLAND, ME · 135,068 served
MAINE WATER COMPANY BIDDEFORD SACO DIV
POLAND, ME · 42,508 served
KENNEBUNK, KENNEBUNKPORT & WELLS WD
KENNEBUNK, ME · 35,663 served
BANGOR WATER DISTRICT
BANGOR, ME · 27,298 served
LEWISTON WATER & SEWER DIVISION
LEWISTON, ME · 23,720 served
KENNEBEC WATER DISTRICT
WATERVILLE, ME · 22,060 served
MAINE WATER COMPANY CAMDEN & ROCKLAND
POLAND, ME · 21,315 served
BRUNSWICK/TOPSHAM WATER DISTRICT
TOPSHAM, ME · 18,250 served
AUBURN WATER DISTRICT
LISBON, ME · 17,245 served
KITTERY WATER DISTRICT
KITTERY, ME · 14,478 served
SANFORD WATER DISTRICT
SANFORD, ME · 14,328 served
GREATER AUGUSTA UTILITY DISTRICT
AUGUSTA, ME · 13,750 served
YORK WATER DISTRICT
YORK, ME · 13,675 served
BATH WATER DISTRICT
BATH, ME · 9,290 served
GARDINER WATER DISTRICT
GARDINER, ME · 9,000 served
BREWER WATER DEPARTMENT
BREWER, ME · 8,860 served
BOOTHBAY REGION WATER DISTRICT
BOOTHBAY, ME · 8,448 served
YARMOUTH WATER DISTRICT
YARMOUTH, ME · 8,000 served
OLD TOWN WATER DISTRICT
OLD TOWN, ME · 7,648 served
LISBON WATER DEPARTMENT
LISBON, ME · 6,643 served
Most Violations
#1 SHELBYS CAFE LLC ST ALBANS
1,500 #2 BIRCH TREE MEADOWS MHP BAR HARBOR
1,017 #3 HOME INC & LEARNING CENTER ORLAND
897 #4 WEST SHORE DEVELOPMENT SEBAGO
875 #5 CHIPPERS RESTAURANT & DELI HANCOCK
857 #6 WILLOWBROOK MOBILE HOME PARK HERMON
829 #7 HANCOCK VILLAGE MHP CASTINE
810 #8 BOUDREAU TRAILER PARK PRINCETON
793 #9 MILLSTONE APARTMENTS BRUNSWICK
765 #10 ACADIA LOBSTER CO TRENTON
757 #11 WOODED GROVE MOBILE HOME PARK KENDUSKEAG
739 #12 NORTH HAVEN WATER DEPARTMENT NORTH HAVEN
734 #13 ST FRANCIS WATER DISTRICT ST FRANCIS
665 #14 TEED UP TOGETHER SAINT DAVID
659 #15 MARS HILL AND BLAINE WATER COMPANY MARS HILL
596 Counties in Maine
Cumberland
224 systems · 217,874 served
· 17,731 violations
York
190 systems · 164,445 served
· 12,163 violations
Penobscot
168 systems · 92,443 served
· 15,780 violations
Kennebec
169 systems · 79,399 served
· 9,772 violations
Androscoggin
94 systems · 70,047 served
· 4,940 violations
Hancock
201 systems · 46,973 served
· 21,298 violations
Aroostook
124 systems · 40,588 served
· 14,153 violations
Oxford
134 systems · 40,326 served
· 8,473 violations
Somerset
100 systems · 33,494 served
· 10,674 violations
Knox
47 systems · 30,692 served
· 3,529 violations
Lincoln
86 systems · 24,371 served
· 6,555 violations
Franklin
61 systems · 22,669 served
· 3,907 violations
Washington
108 systems · 22,237 served
· 7,972 violations
Waldo
77 systems · 19,984 served
· 5,716 violations
Sagadahoc
39 systems · 19,254 served
· 2,951 violations
Piscataquis
42 systems · 11,828 served
· 3,182 violations