Public water system · CT0420011
ActiveAquarion-East Hampton
At a glance
Aquarion-East Hampton (PWSID CT0420011) is an active community water system in Middlesex County, Connecticut. It reports serving 189 people through 48 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 3 violations for this system; none is health-based, and the most recent began in December 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
189
Service connections
48
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Aquarion-East Hampton compare with other water systems in Middlesex County?
By EPA's size categories, Aquarion-East Hampton is a very small system (500 people or fewer). Middlesex County has 277 active public water systems. Its population served is about half of the county average of 353 people per system, and accounts for 0.2% 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 Aquarion-East Hampton 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. Connecticut has 481 active community water systems, 20% of the state's 2,363 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,263 Connecticut systems (96%) list groundwater as their primary source.
Who owns and regulates Aquarion-East Hampton?
EPA lists Aquarion-East Hampton 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 Aquarion-East Hampton have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in December 2021. The violations listed here began between July 2006 and December 2021. By type: 2 public notice, recordkeeping or other and 1 monitoring and reporting. The contaminant or rule involved most often is Consumer Confidence Rule (2 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 2021-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2018-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2006-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
All 3 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.
Aquarion-East Hampton: frequently asked questions
Who runs Aquarion-East Hampton?
Aquarion-East Hampton (PWSID CT0420011) is a community water system privately owned. It is regulated by the CT state drinking water program.
How many people does Aquarion-East Hampton serve?
Aquarion-East Hampton reports serving 189 people through 48 service connections in Middlesex County, Connecticut.
Where does Aquarion-East Hampton get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Aquarion-East Hampton have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in December 2021. 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 Aquarion-East Hampton'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 3 violations for this system; none is health-based, and the most recent began in December 2021. For current results, consult the system's annual water quality report, EPA ECHO, or the CT state drinking water program.
Where can I find Aquarion-East Hampton's water quality report?
As a community water system, Aquarion-East Hampton 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 |
| Ctwc - Shoreline Region-Chester System | Middlesex | 5,030 | Community | Surface water |
| 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 |
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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, “Aquarion-East Hampton, PWSID CT0420011, Connecticut”, https://aquacensus.com/water-systems/connecticut/aquarion-east-hampton-ct0420011 (data as of October 1, 2026).