Public water system · ME0091537
ActiveMaine Water Company Union Division
At a glance
Maine Water Company Union Division (PWSID ME0091537) is an active community water system in Knox County, Maine. It reports serving 238 people through 95 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
238
Service connections
95
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Maine Water Company Union Division compare with other water systems in Knox County?
By EPA's size categories, Maine Water Company Union Division is a very small system (500 people or fewer). Knox County has 46 active public water systems. Its population served is about 64% below the county average of 666 people per system, and accounts for 0.8% 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 Union 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 Union Division?
EPA lists Maine Water Company Union 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 Union Division have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Maine Water Company Union Division. For the latest compliance status, check EPA ECHO for current compliance history.
Maine Water Company Union Division: frequently asked questions
Who runs Maine Water Company Union Division?
Maine Water Company Union Division (PWSID ME0091537) is a community water system privately owned. It is regulated by the ME state drinking water program.
How many people does Maine Water Company Union Division serve?
Maine Water Company Union Division reports serving 238 people through 95 service connections in Knox County, Maine.
Where does Maine Water Company Union 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 Union Division have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Maine Water Company Union 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 Safe Drinking Water Act records list no violations for this system. 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 Union Division's water quality report?
As a community water system, Maine Water Company Union 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 |
| Maine Water Company Warren Division | Knox | 815 | Community | Groundwater |
| North Haven Water Department | Knox | 740 | Community | Surface water |
| Tenants Harbor Water District | Knox | 378 | 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 Union Division, PWSID ME0091537, Maine”, https://aquacensus.com/water-systems/maine/maine-water-company-union-division-me0091537 (data as of October 1, 2026).