Public water system · 050593105
ActiveBay Mills Resort & Casino
At a glance
Bay Mills Resort & Casino (PWSID 050593105) is an active non-transient non-community water system in Michigan. It reports serving 1,978 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as Native American-owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,978
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Bay Mills Resort & Casino compare with other water systems in Michigan?
By EPA's size categories, Bay Mills Resort & Casino 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 Bay Mills Resort & Casino is about 4.6 times 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 Bay Mills Resort & Casino?
EPA lists Bay Mills Resort & Casino 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 Bay Mills Resort & Casino have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025. The violations listed here began between January 2020 and October 2025. By type: 11 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Diquat (2 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 |
|---|---|---|---|---|
| 2025-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Diquatcode 2032 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Glyphosatecode 2034 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endothallcode 2033 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2022-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Glyphosatecode 2034 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endothallcode 2033 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dibromo-3-chloropropane (DBCP)code 2931 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,3,7,8-TCDD (dioxin)code 2063 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylene dibromide (EDB)code 2946 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Diquatcode 2032 | 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.
Bay Mills Resort & Casino: frequently asked questions
Who runs Bay Mills Resort & Casino?
Bay Mills Resort & Casino (PWSID 050593105) is a non-transient non-community water system Native American-owned. It is regulated by the EPA Region 05.
How many people does Bay Mills Resort & Casino serve?
Bay Mills Resort & Casino reports serving 1,978 people through 1 service connection in Michigan.
Where does Bay Mills Resort & Casino 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 Bay Mills Resort & Casino 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 October 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 Bay Mills Resort & Casino'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 October 2025. For current results, consult EPA ECHO, or the EPA Region 05.
Where can I find Bay Mills Resort & Casino's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Bay Mills Resort & Casino 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 |
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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, “Bay Mills Resort & Casino, PWSID 050593105, Michigan”, https://aquacensus.com/water-systems/michigan/bay-mills-resort-casino-050593105 (data as of October 1, 2026).