Public water system · CT0261031
ActiveCtwc - Shoreline Region-Chester System
At a glance
Ctwc - Shoreline Region-Chester System (PWSID CT0261031) is an active community water system in Middlesex County, Connecticut. It reports serving 5,030 people through 2,620 service connections. Its primary water source is surface water, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in November 2016.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
5,030
Service connections
2,620
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Ctwc - Shoreline Region-Chester System compare with other water systems in Middlesex County?
By EPA's size categories, Ctwc - Shoreline Region-Chester System is a medium system (3,301 to 10,000 people). Middlesex County has 277 active public water systems, and Ctwc - Shoreline Region-Chester System is the 3rd-largest of them by population served. Its population served is about 14 times the county average of 353 people per system, and accounts for 5.1% of the 97,777 people reported by systems filed under the county. Across Connecticut, the 2,363 active systems average 1,247 people each. Nationally, the average active community water system reports serving 6,703 people, so Ctwc - Shoreline Region-Chester System is about 25% 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. Connecticut has 481 active community water systems, 20% of the state's 2,363 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 38 Connecticut systems (1.6%) list surface water as their primary source.
Who owns and regulates Ctwc - Shoreline Region-Chester System?
EPA lists Ctwc - Shoreline Region-Chester System as privately owned. The CT state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 223 of the 277 active systems in Middlesex County (81%) are also privately owned.
Does Ctwc - Shoreline Region-Chester System have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in November 2016. The violations listed here began between April 2006 and November 2016. By type: 11 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Nitrite (3 of them). EPA lists 12 as resolved. 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 |
|---|---|---|---|---|
| 2016-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2007-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2007-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2007-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2007-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2007-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Resolved |
| 2006-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2006-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2006-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2006-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | 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.
Ctwc - Shoreline Region-Chester System: frequently asked questions
Who runs Ctwc - Shoreline Region-Chester System?
Ctwc - Shoreline Region-Chester System (PWSID CT0261031) is a community water system privately owned. It is regulated by the CT state drinking water program.
How many people does Ctwc - Shoreline Region-Chester System serve?
Ctwc - Shoreline Region-Chester System reports serving 5,030 people through 2,620 service connections in Middlesex County, Connecticut.
Where does Ctwc - Shoreline Region-Chester System 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 Ctwc - Shoreline Region-Chester System 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 November 2016. 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 Ctwc - Shoreline Region-Chester System'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 November 2016. For current results, consult the system's annual water quality report, EPA ECHO, or the CT state drinking water program.
Where can I find Ctwc - Shoreline Region-Chester System's water quality report?
As a community water system, Ctwc - Shoreline Region-Chester System 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 Middlesex County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Middletown Water Department | Middlesex | 41,019 | Community | Surface water |
| Cromwell Fire District Water Department | Middlesex | 14,316 | Community | Groundwater |
| Portland Water Department | Middlesex | 5,010 | Community | Purchased surface water |
| Connecticut Valley Hospital | Middlesex | 2,928 | Community | Surface water |
| Pratt & Whitney | Middlesex | 2,800 | Non-transient non-community | Groundwater |
| Durham Center Division | Middlesex | 1,601 | 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, “Ctwc - Shoreline Region-Chester System, PWSID CT0261031, Connecticut”, https://aquacensus.com/water-systems/connecticut/ctwc-shoreline-region-chester-system-ct0261031 (data as of October 1, 2026).