Public water system · ME0000315
ActiveIslesboro Central School
At a glance
Islesboro Central School (PWSID ME0000315) is an active non-transient non-community water system in Waldo County, Maine. It reports serving 115 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, 2 are health-based, and the most recent began in December 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
115
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Islesboro Central School compare with other water systems in Waldo County?
By EPA's size categories, Islesboro Central School is a very small system (500 people or fewer). Waldo County has 75 active public water systems. Its population served is about 55% below the county average of 257 people per system, and accounts for 0.6% of the 19,252 people reported by systems filed under the county. Across Maine, the 1,862 active systems average 503 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Islesboro Central School is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Maine has 385 active non-transient non-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 Islesboro Central School?
EPA lists Islesboro Central School 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. 57 of the 75 active systems in Waldo County (76%) are also privately owned.
Does Islesboro Central School have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in December 2023. The violations listed here began between April 2008 and December 2023. By type: 8 monitoring and reporting, 2 monitoring and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Lead and Copper Rule (3 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2023-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2023-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Antimonycode 1074 | No | Resolved |
| 2023-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2018-01-01 | MonitoringMonitoring, Additional Routine (RTCR) · code 3B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2016-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2013-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2008-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2008-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
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.
Islesboro Central School: frequently asked questions
Who runs Islesboro Central School?
Islesboro Central School (PWSID ME0000315) is a non-transient non-community water system privately owned. It is regulated by the ME state drinking water program.
How many people does Islesboro Central School serve?
Islesboro Central School reports serving 115 people through 1 service connection in Waldo County, Maine.
Where does Islesboro Central School 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 Islesboro Central School have any drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in December 2023. 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 Islesboro Central School'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, 2 are health-based, and the most recent began in December 2023. For current results, consult EPA ECHO, or the ME state drinking water program.
Where can I find Islesboro Central School's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Islesboro Central School is a non-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 Waldo County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Belfast Water District | Waldo | 5,698 | Community | Groundwater |
| Searsport Water District | Waldo | 2,763 | Community | Groundwater |
| Rsu 03 Mt View School | Waldo | 1,100 | Non-transient non-community | Groundwater |
| Winterport Water District | Waldo | 763 | Community | Groundwater |
| Fort Knox | Waldo | 592 | Transient non-community | Groundwater |
| Northport Village Corp Water Dept | Waldo | 550 | Community | Purchased groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Islesboro Central School, PWSID ME0000315, Maine”, https://aquacensus.com/water-systems/maine/islesboro-central-school-me0000315 (data as of October 1, 2026).