Tap Water Quality Report for Boston, Massachusetts

Last Provided Update:N/A
Next Expected Update:April 19, 2025

Track your tap water quality with EPA-verified data on contaminants, violations, and health guidelines, updated quarterly from official water system monitoring results.

Boston, Massachusetts tap water has 43 total contaminants, with 2 being above EPA standards and 23 being above InTheTap suggested standards. There are 0 active violations. The primary water source is not specified, serving 0 residents.

Water Systems (2)

2 water systems serve Boston, Massachusetts. Select one or more to filter the data below.

MWRA
Public Water System ID:MA6000000
Population Served:2,660,000
Primary Source:Surface water
Last Updated:Dec 27, 2024
Contact:
BOSTON WATER AND SEWER COMMISSION (MWRA)
Public Water System ID:MA3035000
Population Served:675,647
Primary Source:Surface water purchased
Last Updated:Dec 27, 2024
Contact:

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Water Quality Analysis

Comprehensive analysis of your water quality, showing both detected contaminants and violations history. Note that exceeding EPA contaminant levels in a single test doesn't always constitute a violation, as violations typically require sustained exceedances or failure to follow required treatment protocols.

Water Analysis

View detected contaminants and concentration levels for your water system(s).