Public water system · MI2001542
ActiveIsle Royale - Windigo
At a glance
Isle Royale - Windigo (PWSID MI2001542) is an active transient non-community water system in Keweenaw County, Michigan. It reports serving 115 people through 1 service connection. Its primary water source is surface water, and EPA lists it as owned by the federal government. EPA's records list 4 violations for this system; none is health-based, and the most recent began in May 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
115
Service connections
1
Primary source
SW
Surface water
System type
TNCWS
Transient non-community water system
System record
How does Isle Royale - Windigo compare with other water systems in Keweenaw County?
By EPA's size categories, Isle Royale - Windigo is a very small system (500 people or fewer). Keweenaw County has 19 active public water systems. Its population served is about 19% below the county average of 142 people per system, and accounts for 4.3% of the 2,701 people reported by systems filed under the county. Across Michigan, the 10,599 active systems average 847 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Isle Royale - Windigo is about 20% 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. Michigan has 7,865 active transient non-community water systems, 74% of the state's 10,599 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 68 Michigan systems (0.6%) list surface water as their primary source.
Who owns and regulates Isle Royale - Windigo?
EPA lists Isle Royale - Windigo as owned by the federal government. The MI 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 19 active systems in Keweenaw County (16%) are also owned by the federal government.
Does Isle Royale - Windigo have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in May 2023. The violations listed here began between January 2004 and May 2023. By type: 3 monitoring and reporting and 1 reporting. The contaminant or rule involved most often is Nitrate (3 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2023-05-11 | ReportingReport Startup Procedures Cert Form (RTCR) · code 4C | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2004-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
All 4 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.
Isle Royale - Windigo: frequently asked questions
Who runs Isle Royale - Windigo?
Isle Royale - Windigo (PWSID MI2001542) is a transient non-community water system owned by the federal government. It is regulated by the MI state drinking water program.
How many people does Isle Royale - Windigo serve?
Isle Royale - Windigo reports serving 115 people through 1 service connection in Keweenaw County, Michigan.
Where does Isle Royale - Windigo get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Isle Royale - Windigo have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in May 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 Isle Royale - Windigo'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. EPA's records list 4 violations for this system; none is health-based, and the most recent began in May 2023. For current results, consult EPA ECHO, or the MI state drinking water program.
Where can I find Isle Royale - Windigo's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Isle Royale - Windigo 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 Keweenaw County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Keweenaw Mountain Lodge | Keweenaw | 485 | Transient non-community | Groundwater under influence of surface water |
| Isle Royale-Rock Harbor | Keweenaw | 335 | Transient non-community | Surface water |
| Eagle Harbor Township | Keweenaw | 300 | Community | Groundwater |
| Dnr - Fort Wilkins State Park | Keweenaw | 225 | Transient non-community | Groundwater |
| Grant Township - Copper Harbor | Keweenaw | 200 | Community | Groundwater |
| Mount Bohemia Ski Resort | Keweenaw | 200 | 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, “Isle Royale - Windigo, PWSID MI2001542, Michigan”, https://aquacensus.com/water-systems/michigan/isle-royale-windigo-mi2001542 (data as of October 1, 2026).