Public water system · ME0091830
ActiveUs Coast Guard Station-Jonesport
At a glance
Us Coast Guard Station-Jonesport (PWSID ME0091830) is an active community water system in Washington County, Maine. It reports serving 25 people through 10 service connections. Its primary water source is groundwater under influence of surface water, and EPA lists it as owned by the federal government. Of the 12 most recent violations in EPA's records, 12 are health-based, and the most recent began in November 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
10
Primary source
GU
Groundwater under influence of surface water
System type
CWS
Community water system
System record
How does Us Coast Guard Station-Jonesport compare with other water systems in Washington County?
By EPA's size categories, Us Coast Guard Station-Jonesport is a very small system (500 people or fewer). Washington County has 109 active public water systems. Its population served is well below the county average of 205 people per system, and accounts for 0.1% of the 22,334 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 Us Coast Guard Station-Jonesport 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 under the influence of surface water is well or spring water that the regulator has found to be affected by nearby surface water, so it is regulated under the surface-water treatment rules. 4 Maine systems (0.2%) list groundwater under influence of surface water as their primary source.
Who owns and regulates Us Coast Guard Station-Jonesport?
EPA lists Us Coast Guard Station-Jonesport as owned by the federal government. 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. 3 of the 109 active systems in Washington County (2.8%) are also owned by the federal government.
Does Us Coast Guard Station-Jonesport have drinking water violations?
Of the 12 most recent violations in EPA's records, 12 are health-based, and the most recent began in November 2025. The violations listed here began between October 2023 and November 2025. By type: 8 contaminant level above the legal limit and 4 required treatment not met. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (4 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 |
|---|---|---|---|---|
| 2025-11-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2025-11-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2025-10-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2025-06-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2024-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2024-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2024-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2024-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2024-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2024-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2024-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2023-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | 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.
Us Coast Guard Station-Jonesport: frequently asked questions
Who runs Us Coast Guard Station-Jonesport?
Us Coast Guard Station-Jonesport (PWSID ME0091830) is a community water system owned by the federal government. It is regulated by the ME state drinking water program.
How many people does Us Coast Guard Station-Jonesport serve?
Us Coast Guard Station-Jonesport reports serving 25 people through 10 service connections in Washington County, Maine.
Where does Us Coast Guard Station-Jonesport get its water?
EPA SDWIS lists this system's primary water source as groundwater under influence of surface water. Groundwater under the influence of surface water is well or spring water that the regulator has found to be affected by nearby surface water, so it is regulated under the surface-water treatment rules.
Does Us Coast Guard Station-Jonesport have any drinking water violations?
Of the 12 most recent violations in EPA's records, 12 are health-based, and the most recent began in November 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 Us Coast Guard Station-Jonesport'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, 12 are health-based, and the most recent began in November 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the ME state drinking water program.
Where can I find Us Coast Guard Station-Jonesport's water quality report?
As a community water system, Us Coast Guard Station-Jonesport 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 Washington County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Calais Water Dept | Washington | 2,775 | Community | Groundwater |
| Passamaquoddy Water District | Washington | 2,125 | Community | Surface water |
| Lubec Water District | Washington | 1,775 | Community | Groundwater |
| Baileyville Utilities District | Washington | 1,688 | Community | Groundwater |
| Machias Water Company | Washington | 1,390 | Community | Groundwater |
| Indian Township Tribal Water System | Washington | 535 | 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, “Us Coast Guard Station-Jonesport, PWSID ME0091830, Maine”, https://aquacensus.com/water-systems/maine/us-coast-guard-station-jonesport-me0091830 (data as of October 1, 2026).