Public water system · CT0880011
ActiveCtwc - Naugatuck Region-Central System
At a glance
Ctwc - Naugatuck Region-Central System (PWSID CT0880011) is an active community water system in New Haven County, Connecticut. It reports serving 22,735 people through 11,186 service connections. Its primary water source is surface water, and EPA lists it as privately owned. EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in October 2010.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
22,735
Service connections
11,186
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Ctwc - Naugatuck Region-Central System compare with other water systems in New Haven County?
By EPA's size categories, Ctwc - Naugatuck Region-Central System is a large system (10,001 to 100,000 people). New Haven County has 212 active public water systems, and Ctwc - Naugatuck Region-Central System is the 6th-largest of them by population served. Its population served is about 6.7 times the county average of 3,412 people per system, and accounts for 3.1% of the 723,334 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 - Naugatuck Region-Central System is about 3.4 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 Ctwc - Naugatuck Region-Central System?
EPA lists Ctwc - Naugatuck Region-Central 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. 174 of the 212 active systems in New Haven County (82%) are also privately owned.
Does Ctwc - Naugatuck Region-Central System have drinking water violations?
EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in October 2010. The violations listed here began between July 1994 and October 2010. By type: 7 monitoring and reporting and 1 contaminant level above the legal limit. The contaminants or rules involved are Lead and Copper Rule, Interim Enhanced Surface Water Treatment Rule, Surface Water Treatment Rule and Carbon, total. EPA lists 5 as resolved and 3 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 |
|---|---|---|---|---|
| 2010-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2007-06-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Archived |
| 2007-06-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Archived |
| 2007-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Carbon, totalcode 2920 | No | Archived |
| 2007-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Resolved |
| 2006-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2006-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 1994-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 8 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 - Naugatuck Region-Central System: frequently asked questions
Who runs Ctwc - Naugatuck Region-Central System?
Ctwc - Naugatuck Region-Central System (PWSID CT0880011) is a community water system privately owned. It is regulated by the CT state drinking water program.
How many people does Ctwc - Naugatuck Region-Central System serve?
Ctwc - Naugatuck Region-Central System reports serving 22,735 people through 11,186 service connections in New Haven County, Connecticut.
Where does Ctwc - Naugatuck Region-Central 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 - Naugatuck Region-Central System have any drinking water violations?
EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in October 2010. 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 - Naugatuck Region-Central 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. EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in October 2010. 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 - Naugatuck Region-Central System's water quality report?
As a community water system, Ctwc - Naugatuck Region-Central 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 New Haven County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Regional Water Authority | New Haven | 418,900 | Community | Surface water |
| Waterbury Water Department | New Haven | 107,271 | Community | Surface water |
| Meriden Water Division | New Haven | 58,441 | Community | Surface water |
| Wallingford Water Department | New Haven | 37,267 | Community | Surface water |
| Ctwc - Shoreline Region-Guilford System | New Haven | 33,975 | Community | Surface water |
| Aquarion-Valley | New Haven | 13,080 | 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 - Naugatuck Region-Central System, PWSID CT0880011, Connecticut”, https://aquacensus.com/water-systems/connecticut/ctwc-naugatuck-region-central-system-ct0880011 (data as of October 1, 2026).