Public water system · ME0005786
ActiveSebasco Harbor Resort
At a glance
Sebasco Harbor Resort (PWSID ME0005786) is an active transient non-community water system in Sagadahoc County, Maine. It reports serving 991 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in August 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
991
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Sebasco Harbor Resort compare with other water systems in Sagadahoc County?
By EPA's size categories, Sebasco Harbor Resort is a small system (501 to 3,300 people). Sagadahoc County has 38 active public water systems, and Sebasco Harbor Resort is the 3rd-largest of them by population served. Its population served is about twice the county average of 497 people per system, and accounts for 5.2% of the 18,883 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 Sebasco Harbor Resort is about 6.9 times 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 Sebasco Harbor Resort?
EPA lists Sebasco Harbor Resort 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. 29 of the 38 active systems in Sagadahoc County (76%) are also privately owned.
Does Sebasco Harbor Resort have drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in August 2025. The violations listed here began between July 1999 and August 2025. By type: 3 monitoring, 3 monitoring and reporting, 2 public notice, recordkeeping or other, 2 contaminant level above the legal limit and 2 required treatment not met. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 10 as resolved and 2 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-08-01 | MonitoringMonitoring, Additional Routine (RTCR) · code 3B | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2025-05-31 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2024-05-31 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2024-05-01 | MonitoringMonitoring, Additional Routine (RTCR) · code 3B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-08-01 | MonitoringMonitoring, Additional Routine (RTCR) · code 3B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2012-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2004-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2003-10-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2003-08-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 1999-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
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.
Sebasco Harbor Resort: frequently asked questions
Who runs Sebasco Harbor Resort?
Sebasco Harbor Resort (PWSID ME0005786) is a transient non-community water system privately owned. It is regulated by the ME state drinking water program.
How many people does Sebasco Harbor Resort serve?
Sebasco Harbor Resort reports serving 991 people through 1 service connection in Sagadahoc County, Maine.
Where does Sebasco Harbor Resort 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 Sebasco Harbor Resort have any drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in August 2025. 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 Sebasco Harbor Resort'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, 4 are health-based, and the most recent began in August 2025. For current results, consult EPA ECHO, or the ME state drinking water program.
Where can I find Sebasco Harbor Resort's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Sebasco Harbor Resort 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 Sagadahoc County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Bath Water District | Sagadahoc | 9,205 | Community | Surface water |
| Richmond Utilities District | Sagadahoc | 1,390 | Community | Groundwater |
| Mdoc State Park-Popham Beach West | Sagadahoc | 800 | Transient non-community | Groundwater |
| Bowdoinham Water District | Sagadahoc | 738 | Community | Groundwater |
| Hermit Island Cg #1 | Sagadahoc | 695 | Transient non-community | Groundwater |
| Meadowbrook Camping Area | Sagadahoc | 377 | Transient non-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, “Sebasco Harbor Resort, PWSID ME0005786, Maine”, https://aquacensus.com/water-systems/maine/sebasco-harbor-resort-me0005786 (data as of October 1, 2026).