Public water system · 050593805
ActiveOdawa Casino Mackinaw
At a glance
Odawa Casino Mackinaw (PWSID 050593805) is an active non-transient non-community water system in Michigan. It reports serving 625 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as Native American-owned. EPA's records list one violation for this system; it is not health-based, and the most recent began in December 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
625
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Odawa Casino Mackinaw compare with other water systems in Michigan?
By EPA's size categories, Odawa Casino Mackinaw is a small system (501 to 3,300 people). Across Michigan, the 10,599 active systems average 847 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Odawa Casino Mackinaw is about 45% above 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. Michigan has 1,402 active non-transient non-community water systems, 13% of the state's 10,599 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 10,214 Michigan systems (96%) list groundwater as their primary source.
Who owns and regulates Odawa Casino Mackinaw?
EPA lists Odawa Casino Mackinaw as Native American-owned. The EPA Region 05 is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act.
Does Odawa Casino Mackinaw have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in December 2021. By type: 1 monitoring. The contaminant or rule involved is Revised Total Coliform Rule. EPA lists 1 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 |
|---|---|---|---|---|
| 2021-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
The one violation in EPA's records.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.
Odawa Casino Mackinaw: frequently asked questions
Who runs Odawa Casino Mackinaw?
Odawa Casino Mackinaw (PWSID 050593805) is a non-transient non-community water system Native American-owned. It is regulated by the EPA Region 05.
How many people does Odawa Casino Mackinaw serve?
Odawa Casino Mackinaw reports serving 625 people through 1 service connection in Michigan.
Where does Odawa Casino Mackinaw 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 Odawa Casino Mackinaw have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in December 2021. 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 Odawa Casino Mackinaw'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 one violation for this system; it is not health-based, and the most recent began in December 2021. For current results, consult EPA ECHO, or the EPA Region 05.
Where can I find Odawa Casino Mackinaw's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Odawa Casino Mackinaw 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 Michigan
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Detroit City of | Wayne | 633,218 | Community | Purchased surface water |
| Grand Rapids | Kent | 306,901 | Community | Surface water |
| Kalamazoo | Kalamazoo | 192,992 | Community | Groundwater |
| Lansing Board of Water & Light | Ingham | 166,000 | Community | Groundwater |
| Warren, City of | Macomb | 134,056 | Community | Purchased surface water |
| Sterling Heights, City of | Macomb | 127,000 | Community | Purchased surface water |
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, “Odawa Casino Mackinaw, PWSID 050593805, Michigan”, https://aquacensus.com/water-systems/michigan/odawa-casino-mackinaw-050593805 (data as of October 1, 2026).