Public water system · CT0040011
ActiveAvon Water Co
At a glance
Avon Water Co (PWSID CT0040011) is an active community water system in Hartford County, Connecticut. It reports serving 11,590 people through 4,920 service connections. Its primary water source is groundwater, 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 January 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
11,590
Service connections
4,920
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Avon Water Co compare with other water systems in Hartford County?
By EPA's size categories, Avon Water Co is a large system (10,001 to 100,000 people). Hartford County has 219 active public water systems. Its population served is about 3 times the county average of 3,818 people per system, and accounts for 1.4% of the 836,032 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 Avon Water Co is about 73% above 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 Avon Water Co?
EPA lists Avon Water Co 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. 179 of the 219 active systems in Hartford County (82%) are also privately owned.
Does Avon Water Co have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2018. The violations listed here began between January 2018 and January 2018. By type: 12 monitoring and reporting. The contaminants or rules involved are Chlorobenzene, 1,2-Dibromo-3-chloropropane (DBCP), trans-1,2-Dichloroethylene and Tetrachloroethylene. 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 |
|---|---|---|---|---|
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlorobenzenecode 2989 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dibromo-3-chloropropane (DBCP)code 2931 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Tetrachloroethylenecode 2987 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4,5-TP (Silvex)code 2110 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dichloromethanecode 2964 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1-Dichloroethylenecode 2977 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toluenecode 2991 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Diquatcode 2032 | 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.
Avon Water Co: frequently asked questions
Who runs Avon Water Co?
Avon Water Co (PWSID CT0040011) is a community water system privately owned. It is regulated by the CT state drinking water program.
How many people does Avon Water Co serve?
Avon Water Co reports serving 11,590 people through 4,920 service connections in Hartford County, Connecticut.
Where does Avon Water Co 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 Avon Water Co 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 January 2018. 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 Avon Water Co'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 January 2018. For current results, consult the system's annual water quality report, EPA ECHO, or the CT state drinking water program.
Where can I find Avon Water Co's water quality report?
As a community water system, Avon Water Co 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 Hartford County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Metropolitan District Commission | Hartford | 390,887 | Community | Surface water |
| Ctwc - Northern Reg-Western System | Hartford | 101,313 | Community | Surface water |
| New Britain Water Department | Hartford | 73,534 | Community | Surface water |
| Bristol Water Department | Hartford | 52,079 | Community | Surface water |
| Manchester Water Department | Hartford | 51,198 | Community | Surface water |
| Southington Water Department | Hartford | 43,069 | Community | 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, “Avon Water Co, PWSID CT0040011, Connecticut”, https://aquacensus.com/water-systems/connecticut/avon-water-co-ct0040011 (data as of October 1, 2026).