BOSTON, MA · Suffolk County
BOSTON WATER AND SEWER COMMISSION (MWRA) Water System
Consumer Confidence Report status
BOSTON WATER AND SEWER COMMISSION (MWRA) must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for BOSTON WATER AND SEWER COMMISSION (MWRA).
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Massachusetts’s official records. Always confirm current status with Massachusetts before making decisions based on this information.
System facts
- System ID (PWSID)
- MA3035000
- System type
- Community Water System
- Population served
- 675,647
- Service connections
- 88,895
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
BOSTON WATER AND SEWER COMMISSION (MWRA) is the second largest community water system in Massachusetts, serving 675,647 people from surface water.
As of August 1, 2026, its federal record holds 1 entry in 1982, all of which EPA lists as closed. Nothing has been added since 1982.
None of the 1 are monitoring or reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset; these involve water-quality, treatment, or public-notice findings instead. The record involves the Miscellaneous Other Rules.
Violation history
Notification, Public
—No contaminant on record
August 31, 1982 – September 30, 1982
Archived
Archived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| August 31, 1982 – September 30, 1982 | Notification, Public | — | — | Archived |
Archived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
No enforcement actions on record for this system.
Common questions
Is BOSTON WATER AND SEWER COMMISSION (MWRA) required to publish a Consumer Confidence Report?
- Yes. BOSTON WATER AND SEWER COMMISSION (MWRA) is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is BOSTON WATER AND SEWER COMMISSION (MWRA)’s next Consumer Confidence Report due?
- BOSTON WATER AND SEWER COMMISSION (MWRA)’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does BOSTON WATER AND SEWER COMMISSION (MWRA) have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for BOSTON WATER AND SEWER COMMISSION (MWRA).
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
BOSTON WATER AND SEWER COMMISSION (MWRA)
6179897000
BOSTON, MA 02119