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Massachusetts Water Quality Ratings

TapWaterSafety has rated 31 public water systems in Massachusetts, serving a combined 6,493,393 residents. The statewide average grade is D.

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
State average grade
D
61/100
Total utilities rated 31
Population served 6,493,393
Most recent test 2024
🇪🇺 Would fail EU standards 3 of 31

Top water quality concerns in Massachusetts

  • PFAS contamination
  • Haloacetic acids (HAA9) significantly above health guideline
  • Total trihalomethanes (TTHMs) significantly above health guideline
  • Perfluorohexane sulfonate (PFHXS) significantly above health guideline
  • Haloacetic acids (HAA5)* significantly above health guideline

Grade distribution

A
1 (3%)
B
1 (3%)
C
9 (29%)
D
11 (35%)
F
9 (29%)

All rated utilities in Massachusetts

Sorted by score, highest first. Click any utility to see the full grade card.

Rank Utility City Population Score Grade
#1 UPPER CAPE REGIONAL WATER COOPERATIVE SANDWICH 56,250 95 A
#2 Boston Department of Public Works Boston 685,000 76 B
#3 MWRA BOSTON 2,660,000 72 C
#4 DENNIS WATER DISTRICT DENNIS 65,000 71 C
#5 QUINCY WATER DEPT. (MWRA) QUINCY 106,000 70 C
#6 CHICOPEE WATER DEPT (MWRA) CHICOPEE 55,560 69 C
#7 BROOKLINE WATER AND SEWER DIVISION BROOKLINE 63,191 69 C
#8 FRAMINGHAM WATER DEPT. (MWRA) FRAMINGHAM 72,362 69 C
#9 SPRINGFIELD WATER AND SEWER COMMISSION SPRINGFIELD 167,954 67 C
#10 INIMA USA / AQUARIA LLC DIGHTON 105,643 66 C
#11 NEWTON WATER DEPT. (MWRA) NEWTON 88,415 65 C
#12 REVERE WATER DIVISION (MWRA) REVERE 62,186 64 D
#13 WALTHAM WATER DEPARTMENT WALTHAM 65,218 64 D
#14 MALDEN WATER DIVISION (MWRA) MALDEN 66,263 61 D
#15 LYNN WATER AND SEWER COMM LYNN 101,253 60 D
#16 FALMOUTH WATER DEPT FALMOUTH 97,551 60 D
#17 SALEM AND BEVERLY WATER SUPPLY BOARD BEVERLY 90,330 59 D
#18 CAMBRIDGE WATER DEPARTMENT CAMBRIDGE 118,214 59 D
#19 FALL RIVER WATER DEPARTMENT FALL RIVER 94,000 59 D
#20 HAVERHILL WATER DEPT HAVERHILL 63,235 56 D
#21 CITY OF NEW BEDFORD DPI NEW BEDFORD 101,079 56 D
#22 WORCESTER DPWP, WATER SUPPLY DIVISION WORCESTER 206,518 55 D
#23 TAUNTON WATER DIVISION TAUNTON 62,165 54 F
#24 WEYMOUTH WATER DEPARTMENT WEYMOUTH 57,613 53 F
#25 BOSTON WATER AND SEWER COMMISSION (MWRA) BOSTON 675,647 52 F
#26 LOWELL REGIONAL WATER UTILITY LOWELL 115,000 52 F
#27 BROCKTON WATER DEPARTMENT BROCKTON 105,643 52 F
#28 PEABODY WATER DEPT. PEABODY 54,481 50 F
#29 LAWRENCE WATER WORKS LAWRENCE 88,877 49 F
#30 MEDFORD WATER DEPT. (MWRA) MEDFORD 61,700 47 F
#31 SOMERVILLE WATER DEPT. (MWRA) SOMERVILLE 81,045 46 F