Public water system · MA4072000
ActiveDartmouth Water Division
At a glance
Dartmouth Water Division (PWSID MA4072000) is an active community water system in Bristol County, Massachusetts. It reports serving 24,696 people through 9,547 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
24,696
Service connections
9,547
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Dartmouth Water Division compare with other water systems in Bristol County?
By EPA's size categories, Dartmouth Water Division is a large system (10,001 to 100,000 people). Bristol County has 133 active public water systems. Its population served is about 4.9 times the county average of 5,087 people per system, and accounts for 3.7% of the 676,507 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 Dartmouth Water Division is about 3.7 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 Dartmouth Water Division?
EPA lists Dartmouth Water Division 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. 31 of the 133 active systems in Bristol County (23%) are also owned by a local government.
Does Dartmouth Water Division have drinking water violations?
Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in October 2024. The violations listed here began between October 2017 and October 2024. By type: 7 contaminant level above the legal limit, 2 monitoring and reporting, 1 public notice, recordkeeping or other, 1 required treatment not met and 1 reporting. The contaminant or rule involved most often is Haloacetic acids (HAA5) (4 of them). EPA lists 7 as archived and 5 as resolved. 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. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-10-02 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | Enterococcicode 3002 | No | Resolved |
| 2021-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Archived |
| 2021-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Archived |
| 2021-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Archived |
| 2020-08-18 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | Enterococcicode 3002 | No | Resolved |
| 2020-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2020-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2020-01-03 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2019-12-05 | Required treatment not metTreatment Technique, Level 2 Assessment (RTCR) · code 2B | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2019-11-10 | ReportingNotify Level 1/Level 2 Treatment Technique Violation, Correct Action (RTCR) · code 4F | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Archived |
| 2017-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
The 12 most recent 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.
Dartmouth Water Division: frequently asked questions
Who runs Dartmouth Water Division?
Dartmouth Water Division (PWSID MA4072000) is a community water system owned by a local government. It is regulated by the MA state drinking water program.
How many people does Dartmouth Water Division serve?
Dartmouth Water Division reports serving 24,696 people through 9,547 service connections in Bristol County, Massachusetts.
Where does Dartmouth Water Division 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 Dartmouth Water Division have any drinking water violations?
Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in October 2024. 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 Dartmouth Water Division'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. Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in October 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the MA state drinking water program.
Where can I find Dartmouth Water Division's water quality report?
As a community water system, Dartmouth Water Division 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 Bristol County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Inima USA / Aquaria LLC | Bristol | 105,643 | Community | Surface water |
| City of New Bedford Dpi | Bristol | 101,079 | Community | Surface water |
| Fall River Water Department | Bristol | 94,000 | Community | Surface water |
| Taunton Water Division | Bristol | 62,165 | Community | Surface water |
| Attleboro Water Dept | Bristol | 46,461 | Community | Surface water |
| North Attleboro Water Dept | Bristol | 31,410 | Community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Dartmouth Water Division, PWSID MA4072000, Massachusetts”, https://aquacensus.com/water-systems/massachusetts/dartmouth-water-division-ma4072000 (data as of October 1, 2026).