Public water system · ME0091565
ActiveMaine Water Company Warren Division
At a glance
Maine Water Company Warren Division (PWSID ME0091565) is an active community water system in Knox County, Maine. It reports serving 815 people through 326 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list one violation for this system; it is not health-based, and the most recent began in March 2009.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
815
Service connections
326
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Maine Water Company Warren Division compare with other water systems in Knox County?
By EPA's size categories, Maine Water Company Warren Division is a small system (501 to 3,300 people). Knox County has 46 active public water systems, and Maine Water Company Warren Division is the 4th-largest of them by population served. Its population served is about 22% above the county average of 666 people per system, and accounts for 2.7% of the 30,632 people reported by systems filed under the county. Across Maine, the 1,862 active systems average 503 people each. Nationally, the average active community water system reports serving 6,703 people, so Maine Water Company Warren 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. Maine has 386 active community water systems, 21% of the state's 1,862 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,780 Maine systems (96%) list groundwater as their primary source.
Who owns and regulates Maine Water Company Warren Division?
EPA lists Maine Water Company Warren Division as privately owned. The ME state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 35 of the 46 active systems in Knox County (76%) are also privately owned.
Does Maine Water Company Warren Division have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in March 2009. By type: 1 monitoring and reporting. The contaminant or rule involved is Total coliform bacteria (TCR). EPA lists 1 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 |
|---|---|---|---|---|
| 2009-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
The one violation in EPA's records.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.
Maine Water Company Warren Division: frequently asked questions
Who runs Maine Water Company Warren Division?
Maine Water Company Warren Division (PWSID ME0091565) is a community water system privately owned. It is regulated by the ME state drinking water program.
How many people does Maine Water Company Warren Division serve?
Maine Water Company Warren Division reports serving 815 people through 326 service connections in Knox County, Maine.
Where does Maine Water Company Warren 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 Maine Water Company Warren Division have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in March 2009. 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 Maine Water Company Warren 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 one violation for this system; it is not health-based, and the most recent began in March 2009. For current results, consult the system's annual water quality report, EPA ECHO, or the ME state drinking water program.
Where can I find Maine Water Company Warren Division's water quality report?
As a community water system, Maine Water Company Warren 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 Knox County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Maine Water Company Camden & Rockland | Knox | 21,315 | Community | Surface water |
| Mdoc State Park-Camden Hills | Knox | 1,573 | Transient non-community | Groundwater |
| Vinalhaven Water District | Knox | 1,053 | Community | Surface water |
| North Haven Water Department | Knox | 740 | Community | Surface water |
| Tenants Harbor Water District | Knox | 378 | Community | Groundwater |
| Port Clyde Water District | Knox | 330 | 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, “Maine Water Company Warren Division, PWSID ME0091565, Maine”, https://aquacensus.com/water-systems/maine/maine-water-company-warren-division-me0091565 (data as of October 1, 2026).