Public water system · ME0101409
ActiveBar Harbor Oceanside Koa-East Side
At a glance
Bar Harbor Oceanside Koa-East Side (PWSID ME0101409) is an active transient non-community water system in Hancock County, Maine. It reports serving 98 people through 1 service connection. 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
98
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Bar Harbor Oceanside Koa-East Side compare with other water systems in Hancock County?
By EPA's size categories, Bar Harbor Oceanside Koa-East Side is a very small system (500 people or fewer). Hancock County has 203 active public water systems. Its population served is about 58% below the county average of 232 people per system, and accounts for 0.2% of the 47,019 people reported by systems filed under the county. Across Maine, the 1,862 active systems average 503 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Bar Harbor Oceanside Koa-East Side is about 32% below that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Maine has 1,091 active transient non-community water systems, 59% 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 Bar Harbor Oceanside Koa-East Side?
EPA lists Bar Harbor Oceanside Koa-East Side 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. 157 of the 203 active systems in Hancock County (77%) are also privately owned.
Does Bar Harbor Oceanside Koa-East Side 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 Bar Harbor Oceanside Koa-East Side. For the latest compliance status, check EPA ECHO for current compliance history.
Bar Harbor Oceanside Koa-East Side: frequently asked questions
Who runs Bar Harbor Oceanside Koa-East Side?
Bar Harbor Oceanside Koa-East Side (PWSID ME0101409) is a transient non-community water system privately owned. It is regulated by the ME state drinking water program.
How many people does Bar Harbor Oceanside Koa-East Side serve?
Bar Harbor Oceanside Koa-East Side reports serving 98 people through 1 service connection in Hancock County, Maine.
Where does Bar Harbor Oceanside Koa-East Side 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 Bar Harbor Oceanside Koa-East Side have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Bar Harbor Oceanside Koa-East Side'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 EPA ECHO, or the ME state drinking water program.
Where can I find Bar Harbor Oceanside Koa-East Side's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Bar Harbor Oceanside Koa-East Side is a 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 Hancock County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Town of Bar Harbor- Water Division | Hancock | 4,443 | Community | Surface water |
| Ellsworth Water Department | Hancock | 3,910 | Community | Surface water |
| Southwest Harbor Water & Sewer District | Hancock | 2,480 | Community | Surface water |
| Maine Water Company Bucksport Division | Hancock | 1,700 | Community | Surface water |
| Mount Desert Water Dist North | Hancock | 1,623 | Community | Surface water |
| Castine Water Department | Hancock | 983 | Community | Groundwater under influence of 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, “Bar Harbor Oceanside Koa-East Side, PWSID ME0101409, Maine”, https://aquacensus.com/water-systems/maine/bar-harbor-oceanside-koa-east-side-me0101409 (data as of October 1, 2026).