Public water system · MA1059000

Active

Chester Water Dept

At a glance

Chester Water Dept (PWSID MA1059000) is an active community water system in Hampden County, Massachusetts. It reports serving 750 people through 250 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, 4 are health-based, and the most recent began in July 2024.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

750

Service connections

250

Primary source

Surface water

System type

CWS

Community water system

System record

PWSIDMA1059000

System typeCommunity water system

Activity statusActive

Population served750

Service connections250

Primary water sourceSurface water

Owner typeLocal government

Primacy agencyMA state drinking water program

City servedChester

StateMassachusetts

ZIP01011

CountyHampden County

How does Chester Water Dept compare with other water systems in Hampden County?

By EPA's size categories, Chester Water Dept is a small system (501 to 3,300 people). Hampden County has 115 active public water systems. Its population served is well below the county average of 3,821 people per system, and accounts for 0.2% of the 439,404 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 Chester Water Dept is well below 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 Chester Water Dept?

EPA lists Chester Water Dept 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 115 active systems in Hampden County (27%) are also owned by a local government.

Does Chester Water Dept have drinking water violations?

Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in July 2024. The violations listed here began between July 2019 and July 2024. By type: 8 monitoring and reporting, 3 contaminant level above the legal limit and 1 required treatment not met. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (3 of them). EPA lists 7 as resolved, 4 as archived and 1 as addressed. 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. 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. Addressed means the violation is not resolved or archived and is covered by formal enforcement.

Began	Violation	Contaminant or rule	Health-based	Status
2024-07-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Long Term 2 Enhanced Surface Water Treatment Rulecode 0800	Yes	Archived
2023-10-10	Monitoring and reportingLead Consumer Notice · code 66	Lead and Copper Rulecode 5000	No	Resolved
2023-06-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Addressed
2020-04-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Archived
2020-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Archived
2019-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Archived
2019-07-01	Monitoring and reportingMonitoring, Regular · code 03	2,4-Dcode 2105	No	Resolved
2019-07-01	Monitoring and reportingMonitoring, Regular · code 03	Alachlor (Lasso)code 2051	No	Resolved
2019-07-01	Monitoring and reportingMonitoring, Regular · code 03	Heptachlor epoxidecode 2067	No	Resolved
2019-07-01	Monitoring and reportingMonitoring, Regular · code 03	Ethylene dibromide (EDB)code 2946	No	Resolved
2019-07-01	Monitoring and reportingMonitoring, Regular · code 03	Carbofurancode 2046	No	Resolved
2019-07-01	Monitoring and reportingMonitoring, Regular · code 03	Heptachlorcode 2065	No	Resolved

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.

Chester Water Dept: frequently asked questions

Who runs Chester Water Dept?

Chester Water Dept (PWSID MA1059000) is a community water system owned by a local government. It is regulated by the MA state drinking water program.

How many people does Chester Water Dept serve?

Chester Water Dept reports serving 750 people through 250 service connections in Hampden County, Massachusetts.

Where does Chester Water Dept 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 Chester Water Dept have any drinking water violations?

Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in July 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 Chester Water Dept'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, 4 are health-based, and the most recent began in July 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 Chester Water Dept's water quality report?

As a community water system, Chester Water Dept 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 Hampden County

Water system	County	Population served	Type	Source
Springfield Water and Sewer Commission	Hampden	169,170	Community	Surface water
Chicopee Water Dept (MWRA)	Hampden	55,560	Community	Purchased surface water
Westfield Dpwwater Division	Hampden	41,094	Community	Surface water
Holyoke Water Works	Hampden	37,838	Community	Surface water
West Springfield Dpw Water Division	Hampden	28,835	Community	Groundwater
Agawam Water Department	Hampden	28,692	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, “Chester Water Dept, PWSID MA1059000, Massachusetts”, https://aquacensus.com/water-systems/massachusetts/chester-water-dept-ma1059000 (data as of October 1, 2026).