Public water system · CT0830011
ActiveMiddletown Water Department
At a glance
Middletown Water Department (PWSID CT0830011) is an active community water system in Middlesex County, Connecticut. It reports serving 41,019 people through 11,001 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 10 violations for this system; none is health-based, and the most recent began in August 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
41,019
Service connections
11,001
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Middletown Water Department compare with other water systems in Middlesex County?
By EPA's size categories, Middletown Water Department is a large system (10,001 to 100,000 people). Middlesex County has 277 active public water systems, and Middletown Water Department is the largest of them by population served. Its population served is about 116 times the county average of 353 people per system, and accounts for 42% 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 Middletown Water Department is about 6.1 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. 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 Middletown Water Department?
EPA lists Middletown Water Department as owned by a local government. 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. 45 of the 277 active systems in Middlesex County (16%) are also owned by a local government.
Does Middletown Water Department have drinking water violations?
EPA's records list 10 violations for this system; none is health-based, and the most recent began in August 2025. The violations listed here began between October 2006 and August 2025. By type: 6 monitoring and reporting and 4 public notice, recordkeeping or other. The contaminant or rule involved most often is Consumer Confidence Rule (4 of them). EPA lists 9 as resolved and 1 as archived. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-08-10 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2023-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2020-08-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2020-08-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Carbon, totalcode 2920 | No | Archived |
| 2007-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2006-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2006-12-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2006-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
All 10 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.
Middletown Water Department: frequently asked questions
Who runs Middletown Water Department?
Middletown Water Department (PWSID CT0830011) is a community water system owned by a local government. It is regulated by the CT state drinking water program.
How many people does Middletown Water Department serve?
Middletown Water Department reports serving 41,019 people through 11,001 service connections in Middlesex County, Connecticut.
Where does Middletown 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 Middletown Water Department have any drinking water violations?
EPA's records list 10 violations for this system; none is health-based, and the most recent began in August 2025. 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 Middletown 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. EPA's records list 10 violations for this system; none is health-based, and the most recent began in August 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the CT state drinking water program.
Where can I find Middletown Water Department's water quality report?
As a community water system, Middletown 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 Middlesex County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| 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 |
| 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, “Middletown Water Department, PWSID CT0830011, Connecticut”, https://aquacensus.com/water-systems/connecticut/middletown-water-department-ct0830011 (data as of October 1, 2026).