Public water system · MA3189000
ActiveMilton Water Dept. (MWRA)
At a glance
Milton Water Dept. (MWRA) (PWSID MA3189000) is an active community water system in Norfolk County, Massachusetts. It reports serving 28,630 people through 8,584 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 7 violations for this system; 6 are health-based, and the most recent began in November 2017.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
28,630
Service connections
8,584
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Milton Water Dept. (MWRA) compare with other water systems in Norfolk County?
By EPA's size categories, Milton Water Dept. (MWRA) is a large system (10,001 to 100,000 people). Norfolk County has 58 active public water systems. Its population served is about twice the county average of 14,602 people per system, and accounts for 3.4% of the 846,897 people reported by systems filed under the county. Across Massachusetts, the 1,636 active systems average 6,275 people each. Nationally, the average active community water system reports serving 6,703 people, so Milton Water Dept. (MWRA) is about 4.3 times that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Massachusetts has 531 active community water systems, 32% of the state's 1,636 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 126 Massachusetts systems (7.7%) list purchased surface water as their primary source.
Who owns and regulates Milton Water Dept. (MWRA)?
EPA lists Milton Water Dept. (MWRA) as owned by a local government. The MA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 30 of the 58 active systems in Norfolk County (52%) are also owned by a local government.
Does Milton Water Dept. (MWRA) have drinking water violations?
EPA's records list 7 violations for this system; 6 are health-based, and the most recent began in November 2017. The violations listed here began between January 1992 and November 2017. By type: 6 required treatment not met and 1 monitoring and reporting. The contaminant or rule involved most often is Lead and Copper Rule (6 of them). EPA lists 5 as resolved, 1 as addressed and 1 as archived. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Addressed means the violation is not resolved or archived and is covered by formal enforcement. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2017-11-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Addressed |
| 2007-01-01 | Required treatment not metLead Service Line Replacement (LSLR) · code 64 | Lead and Copper Rulecode 5000 | Yes | Resolved |
| 2001-01-01 | Required treatment not metPublic Education · code 65 | Lead and Copper Rulecode 5000 | Yes | Resolved |
| 2000-01-01 | Required treatment not metPublic Education · code 65 | Lead and Copper Rulecode 5000 | Yes | Resolved |
| 1993-01-01 | Required treatment not metPublic Education · code 65 | Lead and Copper Rulecode 5000 | Yes | Resolved |
| 1992-01-01 | Required treatment not metPublic Education · code 65 | Lead and Copper Rulecode 5000 | Yes | Resolved |
| 1992-01-01 | Required treatment not metFailure to Filter (SWTR) · code 42 | Surface Water Treatment Rulecode 0200 | Yes | Archived |
All 7 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Milton Water Dept. (MWRA): frequently asked questions
Who runs Milton Water Dept. (MWRA)?
Milton Water Dept. (MWRA) (PWSID MA3189000) is a community water system owned by a local government. It is regulated by the MA state drinking water program.
How many people does Milton Water Dept. (MWRA) serve?
Milton Water Dept. (MWRA) reports serving 28,630 people through 8,584 service connections in Norfolk County, Massachusetts.
Where does Milton Water Dept. (MWRA) get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Milton Water Dept. (MWRA) have any drinking water violations?
EPA's records list 7 violations for this system; 6 are health-based, and the most recent began in November 2017. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Milton Water Dept. (MWRA)'s water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 7 violations for this system; 6 are health-based, and the most recent began in November 2017. For current results, consult the system's annual water quality report, EPA ECHO, or the MA state drinking water program.
Where can I find Milton Water Dept. (MWRA)'s water quality report?
As a community water system, Milton Water Dept. (MWRA) must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Norfolk County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Quincy Water Dept. (MWRA) | Norfolk | 106,000 | Community | Purchased surface water |
| Brookline Water and Sewer Division | Norfolk | 63,191 | Community | Purchased surface water |
| Weymouth Water Department | Norfolk | 57,871 | Community | Surface water |
| Randolph/Holbrook Joint Water Board | Norfolk | 46,519 | Community | Surface water |
| Dedham Westwood Water Dist. | Norfolk | 41,630 | Community | Purchased surface water |
| Braintree Water and Sewer Dept. | Norfolk | 39,143 | Community | Surface water |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Milton Water Dept. (MWRA), PWSID MA3189000, Massachusetts”, https://aquacensus.com/water-systems/massachusetts/milton-water-dept-mwra-ma3189000 (data as of October 1, 2026).