Public water system · CT0310052
ActiveCornwall Consolidated School
At a glance
Cornwall Consolidated School (PWSID CT0310052) is an active non-transient non-community water system in Litchfield County, Connecticut. It reports serving 202 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in December 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
202
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Cornwall Consolidated School compare with other water systems in Litchfield County?
By EPA's size categories, Cornwall Consolidated School is a very small system (500 people or fewer). Litchfield County has 346 active public water systems. Its population served is about 41% below the county average of 340 people per system, and accounts for 0.2% of the 117,512 people reported by systems filed under the county. Across Connecticut, the 2,363 active systems average 1,247 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Cornwall Consolidated School is about half of that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Connecticut has 483 active non-transient non-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 Cornwall Consolidated School?
EPA lists Cornwall Consolidated School 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. 36 of the 346 active systems in Litchfield County (10%) are also owned by a local government.
Does Cornwall Consolidated School have drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in December 2023. The violations listed here began between April 1997 and December 2023. By type: 6 monitoring and reporting, 4 contaminant level above the legal limit, 1 public notice, recordkeeping or other and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (5 of them). EPA lists 11 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 |
|---|---|---|---|---|
| 2023-12-07 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2023-09-28 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2023-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, E. coli (RTCR) · code 1A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2023-07-01 | MonitoringMonitoring, Additional Routine (RTCR) · code 3B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cyanidecode 1024 | No | Archived |
| 2015-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2011-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2004-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2004-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2002-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2001-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1997-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | 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.
Cornwall Consolidated School: frequently asked questions
Who runs Cornwall Consolidated School?
Cornwall Consolidated School (PWSID CT0310052) is a non-transient non-community water system owned by a local government. It is regulated by the CT state drinking water program.
How many people does Cornwall Consolidated School serve?
Cornwall Consolidated School reports serving 202 people through 1 service connection in Litchfield County, Connecticut.
Where does Cornwall Consolidated School 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 Cornwall Consolidated School have any drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in December 2023. 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 Cornwall Consolidated School'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, 4 are health-based, and the most recent began in December 2023. For current results, consult EPA ECHO, or the CT state drinking water program.
Where can I find Cornwall Consolidated School's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Cornwall Consolidated School is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Litchfield County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Torrington Water Company | Litchfield | 37,915 | Community | Surface water |
| Watertown Water & Sewer Authority | Litchfield | 9,972 | Community | Purchased surface water |
| Winsted Water Works | Litchfield | 7,784 | Community | Surface water |
| Watertown Fire District | Litchfield | 6,718 | Community | Groundwater |
| Ctwc - Naugatuck Reg-Terryville System | Litchfield | 5,607 | Community | Groundwater |
| Ctwc - Naugatuck Reg-Thomaston System | Litchfield | 3,789 | 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, “Cornwall Consolidated School, PWSID CT0310052, Connecticut”, https://aquacensus.com/water-systems/connecticut/cornwall-consolidated-school-ct0310052 (data as of October 1, 2026).