Public water system · ME0098590

Active

Us Nps Isle Au Haut Ranger Station

At a glance

Us Nps Isle Au Haut Ranger Station (PWSID ME0098590) is an active transient non-community water system in Knox County, Maine. It reports serving 25 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by the federal government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 2020.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

Service connections

Primary source

Groundwater

System type

TNCWS

Transient non-community water system

System record

PWSIDME0098590

System typeTransient non-community water system

Activity statusActive

Population served25

Service connections1

Primary water sourceGroundwater

Owner typeFederal government

Primacy agencyME state drinking water program

City servedIsle Au Haut

StateMaine

ZIP—

CountyKnox County

How does Us Nps Isle Au Haut Ranger Station compare with other water systems in Knox County?

By EPA's size categories, Us Nps Isle Au Haut Ranger Station is a very small system (500 people or fewer). Knox County has 46 active public water systems. Its population served is well below the county average of 666 people per system, and accounts for less than 0.1% 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 transient non-community water system reports serving 144 people, so Us Nps Isle Au Haut Ranger Station is well 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 Us Nps Isle Au Haut Ranger Station?

EPA lists Us Nps Isle Au Haut Ranger Station 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. 1 of the 46 active systems in Knox County (2.2%) are also owned by the federal government.

Does Us Nps Isle Au Haut Ranger Station have drinking water violations?

Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 2020. The violations listed here began between January 2011 and September 2020. By type: 5 monitoring and reporting, 4 monitoring and 3 public notice, recordkeeping or other. The contaminant or rule involved most often is Revised Total Coliform Rule (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
2020-09-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2020-08-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2019-07-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2018-07-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2018-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	Resolved
2015-10-28	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2015-04-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2014-07-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2012-11-07	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2011-11-10	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitritecode 1041	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	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 Nps Isle Au Haut Ranger Station: frequently asked questions

Who runs Us Nps Isle Au Haut Ranger Station?

Us Nps Isle Au Haut Ranger Station (PWSID ME0098590) is a transient non-community water system owned by the federal government. It is regulated by the ME state drinking water program.

How many people does Us Nps Isle Au Haut Ranger Station serve?

Us Nps Isle Au Haut Ranger Station reports serving 25 people through 1 service connection in Knox County, Maine.

Where does Us Nps Isle Au Haut Ranger Station 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 Us Nps Isle Au Haut Ranger Station have any drinking water violations?

Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 2020. 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 Nps Isle Au Haut Ranger Station'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, none is health-based, and the most recent began in September 2020. For current results, consult EPA ECHO, or the ME state drinking water program.

Where can I find Us Nps Isle Au Haut Ranger Station's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Us Nps Isle Au Haut Ranger Station 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 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, “Us Nps Isle Au Haut Ranger Station, PWSID ME0098590, Maine”, https://aquacensus.com/water-systems/maine/us-nps-isle-au-haut-ranger-station-me0098590 (data as of October 1, 2026).