County Water Quality Report

Middlesex County, Massachusetts

8 public water systems serving 668,217 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
F
54/100
Utilities rated 8
Population served 668,217

Top water quality concerns in Middlesex County

  • PFAS contaminationin 8 of 8 utilities
  • Haloacetic acids (HAA9) significantly above health guidelinein 8 of 8 utilities
  • Haloacetic acids (HAA5)* significantly above health guidelinein 6 of 8 utilities
  • Total trihalomethanes (TTHMs)* significantly above health guidelinein 5 of 8 utilities
  • Perfluorohexane sulfonate (PFHXS) significantly above health guidelinein 2 of 8 utilities

All utilities in Middlesex County

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

D
55/100

FRAMINGHAM WATER DEPT. (MWRA)

FRAMINGHAM · 72,362 residents

Top concern: PFAS contamination

View report →
D
55/100

MALDEN WATER DIVISION (MWRA)

MALDEN · 66,263 residents

Top concern: PFAS contamination

View report →
D
55/100

MEDFORD WATER DEPT. (MWRA)

MEDFORD · 61,700 residents

Top concern: PFAS contamination

View report →
D
55/100

NEWTON WATER DEPT. (MWRA)

NEWTON · 88,415 residents

Top concern: PFAS contamination

View report →
D
55/100

SOMERVILLE WATER DEPT. (MWRA)

SOMERVILLE · 81,045 residents

Top concern: PFAS contamination

View report →
D
55/100

WALTHAM WATER DEPARTMENT

WALTHAM · 65,218 residents

Top concern: PFAS contamination

View report →
F
50/100

CAMBRIDGE WATER DEPARTMENT

CAMBRIDGE · 118,214 residents

Top concern: PFAS contamination

View report →
F
48/100

LOWELL REGIONAL WATER UTILITY

LOWELL · 115,000 residents

Top concern: PFAS contamination

View report →