Public water system · MN5390042

Active

Oak Island Resort

At a glance

Oak Island Resort (PWSID MN5390042) is an active transient non-community water system in Lake of the Woods County, Minnesota. It reports serving 54 people through 10 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 9 are health-based, and the most recent began in June 2023.

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

PWSIDMN5390042

System typeTransient non-community water system

Activity statusActive

Population served54

Service connections10

Primary water sourceGroundwater

Owner typePrivate

Primacy agencyMN state drinking water program

City served—

StateMinnesota

ZIP—

CountyLake of the Woods County

How does Oak Island Resort compare with other water systems in Lake of the Woods County?

By EPA's size categories, Oak Island Resort is a very small system (500 people or fewer). Lake of the Woods County has 66 active public water systems. Its population served is about 29% below the county average of 76 people per system, and accounts for 1.1% of the 5,031 people reported by systems filed under the county. Across Minnesota, the 6,465 active systems average 820 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Oak Island Resort is about 62% 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. Minnesota has 5,008 active transient non-community water systems, 77% of the state's 6,465 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 6,261 Minnesota systems (97%) list groundwater as their primary source.

Who owns and regulates Oak Island Resort?

EPA lists Oak Island Resort as privately owned. The MN state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 58 of the 66 active systems in Lake of the Woods County (88%) are also privately owned.

Does Oak Island Resort have drinking water violations?

Of the 12 most recent violations in EPA's records, 9 are health-based, and the most recent began in June 2023. The violations listed here began between June 2005 and June 2023. By type: 9 required treatment not met, 2 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Surface Water Treatment Rule (7 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
2023-06-01	Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44	Interim Enhanced Surface Water Treatment Rulecode 0300	Yes	Resolved
2023-06-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Resolved
2023-05-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Resolved
2023-05-01	Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44	Interim Enhanced Surface Water Treatment Rulecode 0300	Yes	Resolved
2022-09-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Resolved
2022-08-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Resolved
2022-07-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Resolved
2022-06-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Resolved
2017-09-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2014-05-01	Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44	Interim Enhanced Surface Water Treatment Rulecode 0300	Yes	Resolved
2007-06-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2005-06-01	Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36	Surface Water Treatment Rulecode 0200	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.

Oak Island Resort: frequently asked questions

Who runs Oak Island Resort?

Oak Island Resort (PWSID MN5390042) is a transient non-community water system privately owned. It is regulated by the MN state drinking water program.

How many people does Oak Island Resort serve?

Oak Island Resort reports serving 54 people through 10 service connections in Lake of the Woods County, Minnesota.

Where does Oak Island 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 Oak Island Resort have any drinking water violations?

Of the 12 most recent violations in EPA's records, 9 are health-based, and the most recent began in June 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 Oak Island 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, 9 are health-based, and the most recent began in June 2023. For current results, consult EPA ECHO, or the MN state drinking water program.

Where can I find Oak Island Resort's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Oak Island 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 Lake of the Woods County

Water system	County	Population served	Type	Source
Baudette	Lake of the Woods	947	Community	Groundwater
Bethany Lutheran Church	Lake of the Woods	501	Transient non-community	Groundwater
Rock Harbor Lodge	Lake of the Woods	200	Transient non-community	Groundwater
Ballard'S Resort	Lake of the Woods	200	Transient non-community	Groundwater
Marina Drive Campground	Lake of the Woods	130	Transient non-community	Groundwater
Flag Island Resort	Lake of the Woods	120	Transient non-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, “Oak Island Resort, PWSID MN5390042, Minnesota”, https://aquacensus.com/water-systems/minnesota/oak-island-resort-mn5390042 (data as of October 1, 2026).