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Massachusetts Water Quality
1,599 public water systems serving 10,332,845 people.
Water Systems
1,599
Total Violations
73,886
Violation Rate
95.2%
PFAS Detection
56.3%
148 of 263 tested
Largest Water Systems
MWRA
CHELSEA, MA · 2,660,000 served
BOSTON WATER AND SEWER COMMISSION (MWRA)
BOSTON, MA · 675,647 served
WORCESTER DPWP, WATER SUPPLY DIVISION
WORCESTER, MA · 206,518 served
SPRINGFIELD WATER AND SEWER COMMISSION
SPRINGFIELD, MA · 167,954 served
CAMBRIDGE WATER DEPARTMENT
CAMBRIDGE, MA · 118,214 served
LOWELL REGIONAL WATER UTILITY
LOWELL, MA · 115,000 served
QUINCY WATER DEPT. (MWRA)
QUINCY, MA · 106,000 served
BROCKTON WATER DEPARTMENT
BROCKTON, MA · 105,643 served
INIMA USA / AQUARIA LLC
NORTH DIGHTON, MA · 105,643 served
LYNN WATER AND SEWER COMM
LYNN, MA · 101,253 served
CITY OF NEW BEDFORD DPI
NEW BEDFORD, MA · 101,079 served
FALMOUTH WATER DEPT
FALMOUTH, MA · 97,551 served
FALL RIVER WATER DEPARTMENT
FALL RIVER, MA · 94,000 served
SALEM AND BEVERLY WATER SUPPLY BOARD
BEVERLY, MA · 90,330 served
LAWRENCE WATER WORKS
LAWRENCE, MA · 88,877 served
NEWTON WATER DEPT. (MWRA)
NEWTON, MA · 88,415 served
SOMERVILLE WATER DEPT. (MWRA)
SOMERVILLE, MA · 81,045 served
FRAMINGHAM WATER DEPT. (MWRA)
FRAMINGHAM, MA · 72,362 served
MALDEN WATER DIVISION (MWRA)
MALDEN, MA · 66,263 served
WALTHAM WATER DEPARTMENT
WALTHAM, MA · 65,218 served
Most Violations
#1 NEW ENGLAND LABORERS TRAINING ACADEMY HOPKINTON
965 #2 METROWEST YMCA FRAMINGHAM
744 #3 COOL SANDY BEACH COMMUNITY WATER SYSTEM RUTLAND
642 #4 BROOMFIELD LABORATORIES LEOMINSTER
641 #5 PARAGON COMMUNICATIONS BOLTON
582 #6 BOXBOROUGH EXECUTIVE OFFICE CENTER BOXBOROUGH
549 #7 CENTRE VILLAGE APARTMENTS HARVARD
531 #8 BROOK VILLAGE CONDOMINIUM HOPKINTON
515 #9 AUBURN WATER DISTRICT AUBURN
503 #10 GROWING FOOTPRINTS EDUCATION CENTER CHARLTON
497 #11 PINE HILL CONDOMINIUM WORCESTER
493 #12 HERITAGE ASSOCIATION WARREN
484 #13 LANCASTER COUNTY ROAD LLC BOSTON
477 #14 IMMACULATE HEART OF MARY SCHOOL STILL RIVER
470 #15 MADDEN ESTATES WEST BROOKFIELD
444 Counties in Massachusetts
Suffolk
8 systems · 3,456,243 served
· 111 violations
Middlesex
204 systems · 1,623,176 served
· 16,575 violations
Essex
67 systems · 908,499 served
· 3,080 violations
Norfolk
57 systems · 842,114 served
· 2,645 violations
Worcester
345 systems · 773,172 served
· 23,751 violations
Bristol
133 systems · 673,471 served
· 3,611 violations
Barnstable
127 systems · 628,756 served
· 2,953 violations
Plymouth
129 systems · 574,062 served
· 4,809 violations
Hampden
115 systems · 440,281 served
· 3,254 violations
Hampshire
93 systems · 146,028 served
· 2,908 violations
Berkshire
179 systems · 133,575 served
· 4,895 violations
Franklin
112 systems · 58,737 served
· 3,736 violations
Dukes
25 systems · 42,168 served
· 1,211 violations
Nantucket
5 systems · 32,563 served
· 347 violations