County Water Quality Report

Suffolk County, Massachusetts

4 public water systems serving 4,082,833 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
F
59/100
Utilities rated 4
Population served 4,082,833
Most recent test 2024
🇪🇺 Would fail EU standards 1 of 4

Top water quality concerns in Suffolk County

  • PFAS contaminationin 3 of 4 utilities
  • Haloacetic acids (HAA9) significantly above health guidelinein 2 of 4 utilities
  • Haloacetic acids (HAA5)* significantly above health guidelinein 2 of 4 utilities
  • Total trihalomethanes (TTHMs)* significantly above health guidelinein 2 of 4 utilities
  • Haloacetic acids (HAA5) significantly above health guidelinein 1 of 4 utilities

All utilities in Suffolk County

Click any utility for full grade card, contaminant data, and treatment plant contact info.

C
66/100

Boston Department of Public Works

Boston · 685,000 residents

Top concern: Lead detected in source water

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D
60/100

MWRA

BOSTON · 2,660,000 residents

Top concern: PFAS contamination

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D
55/100

BOSTON WATER AND SEWER COMMISSION (MWRA)

BOSTON · 675,647 residents

Top concern: PFAS contamination

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D
55/100

REVERE WATER DIVISION (MWRA)

REVERE · 62,186 residents

Top concern: PFAS contamination

View report →