Public water system · CT0860021
ActiveScwa, Mohegan Division
At a glance
Scwa, Mohegan Division (PWSID CT0860021) is an active community water system in New London County, Connecticut. It reports serving 1,428 people through 359 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in December 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,428
Service connections
359
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Scwa, Mohegan Division compare with other water systems in New London County?
By EPA's size categories, Scwa, Mohegan Division is a small system (501 to 3,300 people). New London County has 394 active public water systems. Its population served is about 169% above the county average of 532 people per system, and accounts for 0.7% 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 community water system reports serving 6,703 people, so Scwa, Mohegan Division is well below 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 Scwa, Mohegan Division?
EPA lists Scwa, Mohegan Division 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 Scwa, Mohegan Division have drinking water violations?
EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in December 2015. The violations listed here began between August 1991 and December 2015. By type: 3 contaminant level above the legal limit, 1 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 5 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 |
|---|---|---|---|---|
| 2015-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2004-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1992-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1992-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1991-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 5 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.
Scwa, Mohegan Division: frequently asked questions
Who runs Scwa, Mohegan Division?
Scwa, Mohegan Division (PWSID CT0860021) is a community water system owned by a local government. It is regulated by the CT state drinking water program.
How many people does Scwa, Mohegan Division serve?
Scwa, Mohegan Division reports serving 1,428 people through 359 service connections in New London County, Connecticut.
Where does Scwa, Mohegan Division 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 Scwa, Mohegan Division have any drinking water violations?
EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in December 2015. 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 Scwa, Mohegan Division'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 5 violations for this system; 3 are health-based, and the most recent began in December 2015. For current results, consult the system's annual water quality report, EPA ECHO, or the CT state drinking water program.
Where can I find Scwa, Mohegan Division's water quality report?
As a community water system, Scwa, Mohegan Division 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 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, “Scwa, Mohegan Division, PWSID CT0860021, Connecticut”, https://aquacensus.com/water-systems/connecticut/scwa-mohegan-division-ct0860021 (data as of October 1, 2026).