💧 ZIP Water Report

Tap water in Waltham, MA — ZIP 02455

1 public water system serving about 65,218 people.

A
Excellent

Water systems serving 02455

Waltham Water Department
PWSID MA3308000 · serves 65,218 · surface water
0 health-based / 1 total violations (5 yrs)
A

Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology