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Public water system record

Chelsea Water Dept. (MWRA)

Serves Chelsea, Suffolk County, MA · 38,319 people served

Federal records show no health-based violations and no monitoring or reporting issues for Chelsea Water Dept. (MWRA) in the last ten years.

  • MA3057000
  • CHELSEA
  • MA
  • 38,319 served

System profile

Source water Purchased surface water
ZIP 02150
EPA system ID MA3057000

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
0

Key facts

  • Chelsea Water Dept. (MWRA) buys its water from MWRA.
  • Most recent formal enforcement: compliance order (no penalty) by Massachusetts, February 2011.
  • Record on file since 1991, with 17 health-based violations before October 19, 2016.
  • Lead pipe inventory: 87 lead and 4,403 unknown out of 5,885 service lines.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

None since October 2016, and no monitoring or reporting violations either.

Full record since 1991

EPA's records for Chelsea Water Dept. (MWRA) go back to 1991. Before October 19, 2016 they list 17 health-based violations (7 resolved, 10 archived by EPA without a recorded fix) and 1 monitoring or reporting violation.

Violations that began in Health-based Monitoring and reporting
1990s 15 0
2000s 1 0
2010 to October 18, 2016 1 1

Most recent health-based violation before October 19, 2016: Lead and Copper Rule, began January 2010, Resolved.

Show all 17 health-based violations before October 19, 2016
Contaminant Start date Status
Lead and Copper Rule
Treatment technique failure
 Jan 1, 2010 Resolved
Lead and Copper Rule
Treatment technique failure
 Jan 1, 2007 Resolved
Lead and Copper Rule
Treatment technique failure
 Jan 1, 1999 Resolved
Lead and Copper Rule
Treatment technique failure
 Jan 1, 1997 Resolved
Total Coliform
Contaminant limit exceeded
 Jul 1, 1996 Archived
Total Coliform
Contaminant limit exceeded
 Nov 1, 1995 Archived
Total Coliform
Contaminant limit exceeded
 Oct 1, 1995 Archived
Total Coliform
Contaminant limit exceeded
 Sep 1, 1995 Archived
Total Coliform
Contaminant limit exceeded
 Aug 1, 1995 Archived
Total Coliform
Contaminant limit exceeded
 Jul 1, 1995 Archived
Total Coliform
Contaminant limit exceeded
 Jun 1, 1995 Archived
Total Coliform
Contaminant limit exceeded
 May 1, 1995 Archived
Lead and Copper Rule
Treatment technique failure
 Jan 1, 1994 Resolved
Lead and Copper Rule
Treatment technique failure
 Jan 1, 1993 Resolved
Surface Water Treatment Rule
Treatment technique failure
 Jan 1, 1992 Archived
Lead and Copper Rule
Treatment technique failure
 Jan 1, 1992 Resolved
Total Coliform
Contaminant limit exceeded
 Apr 1, 1991 Archived

Enforcement actions

Massachusetts regulators took 5 formal enforcement actions against Chelsea Water Dept. (MWRA) between 1995 and 2011. The most recent was a compliance order (no penalty) in February 2011.

Date By Action Violations covered
Feb 22, 2011 Massachusetts Compliance order (no penalty) 1 violation (1 health-based): Lead and Copper Rule
Apr 2, 2008 Massachusetts Compliance order (no penalty) 1 violation (1 health-based): Lead and Copper Rule
Feb 9, 2000 Massachusetts Compliance order (no penalty) 1 violation (1 health-based): Lead and Copper Rule
Feb 19, 1998 Massachusetts Compliance order (no penalty) 1 violation (1 health-based): Lead and Copper Rule
Nov 29, 1995 Massachusetts Compliance order (no penalty) 7 violations (7 health-based): Total Coliform

Where the water comes from

Chelsea Water Dept. (MWRA) buys its water from MWRA. It lists no wells or intakes of its own.

Buys water from

Annual water quality report

Chelsea Water Dept. (MWRA) must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Massachusetts.

Certified drinking water labs by state EPA guidance for private wells