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Public water system record

Arlington Water Dept. (MWRA)

Serves Arlington, Middlesex County, MA · 46,308 people served

Federal records show no health-based violations and 1 monitoring/reporting issue for Arlington Water Dept. (MWRA) in the last ten years.

  • MA3010000
  • ARLINGTON
  • MA
  • 46,308 served

System profile

Source water Purchased surface water
ZIP 02476
EPA system ID MA3010000

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
1

Key facts

  • Arlington Water Dept. (MWRA) buys its water from MWRA.
  • Most recent formal enforcement: compliance order (no penalty) by Massachusetts, April 2023.
  • Record on file since 1992, with 4 health-based violations before October 19, 2016.
  • Lead pipe inventory: 30 lead and 3,586 unknown out of 12,705 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.

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Asbestos
Monitoring and reporting
 Jan 1, 2020 Resolved

Full record since 1992

EPA's records for Arlington Water Dept. (MWRA) go back to 1992. Before October 19, 2016 they list 4 health-based violations (3 resolved, 1 archived by EPA without a recorded fix) and 1 monitoring or reporting violation.

Violations that began in Health-based Monitoring and reporting
1990s 4 0
2010 to October 18, 2016 0 1
2020s 0 1

Most recent health-based violation before October 19, 2016: Lead and Copper Rule, began January 1994, Resolved.

Show all 4 health-based violations before October 19, 2016
Contaminant Start date Status
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

Enforcement actions

Massachusetts regulators took 3 formal enforcement actions against Arlington Water Dept. (MWRA) between 1993 and 2023. The most recent was a compliance order (no penalty) in April 2023.

Date By Action Violations covered
Apr 11, 2023 Massachusetts Compliance order (no penalty) 1 violation: Asbestos
Jun 13, 1995 Massachusetts Compliance order (no penalty) 3 violations (3 health-based): Lead and Copper Rule
Jun 29, 1993 Massachusetts Compliance order (no penalty) 1 violation (1 health-based): Surface Water Treatment Rule

Where the water comes from

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

Buys water from

Annual water quality report

Arlington 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