Public water system · MA4336000
ActiveWeymouth Water Department
At a glance
Weymouth Water Department (PWSID MA4336000) is an active community water system in Norfolk County, Massachusetts. It reports serving 57,871 people through 16,773 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
57,871
Service connections
16,773
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Weymouth Water Department compare with other water systems in Norfolk County?
By EPA's size categories, Weymouth Water Department is a large system (10,001 to 100,000 people). Norfolk County has 58 active public water systems, and Weymouth Water Department is the 3rd-largest of them by population served. Its population served is about 4 times the county average of 14,602 people per system, and accounts for 6.8% 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 Weymouth Water Department is about 8.6 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 76 Massachusetts systems (4.6%) list surface water as their primary source.
Who owns and regulates Weymouth Water Department?
EPA lists Weymouth Water Department 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 Weymouth Water Department have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2023. The violations listed here began between April 2007 and January 2023. By type: 12 monitoring and reporting. The contaminants or rules involved are Lead and Copper Rule, cis-1,2-Dichloroethylene, Chlorobenzene and Tetrachloroethylene. EPA lists 11 as archived and 1 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 |
|---|---|---|---|---|
| 2023-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | cis-1,2-Dichloroethylenecode 2380 | No | Archived |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlorobenzenecode 2989 | No | Archived |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Tetrachloroethylenecode 2987 | No | Archived |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | o-Dichlorobenzenecode 2968 | No | Archived |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | p-Dichlorobenzenecode 2969 | No | Archived |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzenecode 2990 | No | Archived |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Archived |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Archived |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | No | Archived |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toluenecode 2991 | No | Archived |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | 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.
Weymouth Water Department: frequently asked questions
Who runs Weymouth Water Department?
Weymouth Water Department (PWSID MA4336000) is a community water system owned by a local government. It is regulated by the MA state drinking water program.
How many people does Weymouth Water Department serve?
Weymouth Water Department reports serving 57,871 people through 16,773 service connections in Norfolk County, Massachusetts.
Where does Weymouth Water Department get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Weymouth Water Department have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2023. 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 Weymouth Water Department'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, none is health-based, and the most recent began in January 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the MA state drinking water program.
Where can I find Weymouth Water Department's water quality report?
As a community water system, Weymouth Water Department 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 |
| 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 |
| Bluedrop Water @ St Bernadette Church | Norfolk | 35,114 | Transient non-community | Purchased 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, “Weymouth Water Department, PWSID MA4336000, Massachusetts”, https://aquacensus.com/water-systems/massachusetts/weymouth-water-department-ma4336000 (data as of October 1, 2026).