Public water system · CT1050492
ActiveRegion 18 Schools - Lyme Street
At a glance
Region 18 Schools - Lyme Street (PWSID CT1050492) is an active non-transient non-community water system in New London County, Connecticut. It reports serving 1,102 people through 3 service connections. 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, 8 are health-based, and the most recent began in November 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,102
Service connections
3
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Region 18 Schools - Lyme Street compare with other water systems in New London County?
By EPA's size categories, Region 18 Schools - Lyme Street is a small system (501 to 3,300 people). New London County has 394 active public water systems. Its population served is about twice the county average of 532 people per system, and accounts for 0.5% of the 209,444 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 Region 18 Schools - Lyme Street is about 156% 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 Region 18 Schools - Lyme Street?
EPA lists Region 18 Schools - Lyme Street 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. 64 of the 394 active systems in New London County (16%) are also owned by a local government.
Does Region 18 Schools - Lyme Street have drinking water violations?
Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in November 2020. The violations listed here began between May 2002 and November 2020. By type: 6 contaminant level above the legal limit, 3 monitoring and reporting, 2 required treatment not met and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (8 of them). 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 |
|---|---|---|---|---|
| 2020-11-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2020-10-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2011-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2010-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2009-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2004-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-01-29 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2003-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2003-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2002-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | 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.
Region 18 Schools - Lyme Street: frequently asked questions
Who runs Region 18 Schools - Lyme Street?
Region 18 Schools - Lyme Street (PWSID CT1050492) 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 Region 18 Schools - Lyme Street serve?
Region 18 Schools - Lyme Street reports serving 1,102 people through 3 service connections in New London County, Connecticut.
Where does Region 18 Schools - Lyme Street 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 Region 18 Schools - Lyme Street have any drinking water violations?
Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in November 2020. 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 Region 18 Schools - Lyme Street'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, 8 are health-based, and the most recent began in November 2020. For current results, consult EPA ECHO, or the CT state drinking water program.
Where can I find Region 18 Schools - Lyme Street's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Region 18 Schools - Lyme Street 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 New London County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Norwich Public Utilities | New London | 36,163 | Community | Surface water |
| Groton Utilities | New London | 30,200 | Community | Surface water |
| New London Dept. of Public Utilities | New London | 27,620 | Community | Surface water |
| Waterford Wpca | New London | 16,578 | Community | Purchased surface water |
| East Lyme Water & Sewer Commission | New London | 15,245 | Community | Purchased surface water |
| Aquarion-Mystic | New London | 10,788 | 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, “Region 18 Schools - Lyme Street, PWSID CT1050492, Connecticut”, https://aquacensus.com/water-systems/connecticut/region-18-schools-lyme-street-ct1050492 (data as of October 1, 2026).