Public water system · CT0241243
ActiveParish Hill High School
At a glance
Parish Hill High School (PWSID CT0241243) is an active non-transient non-community water system in Windham County, Connecticut. It reports serving 487 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 7 violations for this system; 4 are health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
487
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Parish Hill High School compare with other water systems in Windham County?
By EPA's size categories, Parish Hill High School is a very small system (500 people or fewer). Windham County has 254 active public water systems. Its population served is about twice the county average of 251 people per system, and accounts for 0.8% of the 63,868 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 Parish Hill High School is about 13% above 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 Parish Hill High School?
EPA lists Parish Hill High 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. 30 of the 254 active systems in Windham County (12%) are also owned by a local government.
Does Parish Hill High School have drinking water violations?
EPA's records list 7 violations for this system; 4 are health-based, and the most recent began in October 2024. The violations listed here began between June 1996 and October 2024. By type: 3 contaminant level above the legal limit, 2 monitoring and reporting, 1 required treatment not met and 1 reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 5 as resolved and 2 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Unaddressed |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2015-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2002-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1997-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1996-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1996-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 7 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.
Parish Hill High School: frequently asked questions
Who runs Parish Hill High School?
Parish Hill High School (PWSID CT0241243) 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 Parish Hill High School serve?
Parish Hill High School reports serving 487 people through 1 service connection in Windham County, Connecticut.
Where does Parish Hill High 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 Parish Hill High School have any drinking water violations?
EPA's records list 7 violations for this system; 4 are health-based, and the most recent began in October 2024. 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 Parish Hill High 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. EPA's records list 7 violations for this system; 4 are health-based, and the most recent began in October 2024. For current results, consult EPA ECHO, or the CT state drinking water program.
Where can I find Parish Hill High School's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Parish Hill High 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 Windham County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Windham Water Works | Windham | 21,214 | Community | Surface water |
| Putnam Water Pollution Control Authority | Windham | 7,300 | Community | Surface water |
| Ctwc - Crystal System | Windham | 6,378 | Community | Groundwater |
| Ctwc - Gallup System | Windham | 2,538 | Community | Groundwater |
| Ctwc - Plainfield System | Windham | 1,713 | Community | Groundwater |
| Killingly High School & Agricultural Ctr | Windham | 1,400 | 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, “Parish Hill High School, PWSID CT0241243, Connecticut”, https://aquacensus.com/water-systems/connecticut/parish-hill-high-school-ct0241243 (data as of October 1, 2026).