Public water system · MI2004566
ActiveRousseau Bar
At a glance
Rousseau Bar (PWSID MI2004566) is an active transient non-community water system in Ontonagon County, Michigan. It reports serving 60 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 11 violations for this system; none is health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
60
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Rousseau Bar compare with other water systems in Ontonagon County?
By EPA's size categories, Rousseau Bar is a very small system (500 people or fewer). Ontonagon County has 25 active public water systems. Its population served is well below the county average of 211 people per system, and accounts for 1.1% of the 5,270 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 Rousseau Bar is about 58% 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. 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 Rousseau Bar?
EPA lists Rousseau Bar as privately owned. 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. 17 of the 25 active systems in Ontonagon County (68%) are also privately owned.
Does Rousseau Bar have drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in October 2024. The violations listed here began between July 1996 and October 2024. By type: 9 monitoring and reporting and 2 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). EPA lists 11 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 |
|---|---|---|---|---|
| 2024-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2015-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2003-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2002-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2002-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1998-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1998-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1997-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1996-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 11 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.
Rousseau Bar: frequently asked questions
Who runs Rousseau Bar?
Rousseau Bar (PWSID MI2004566) is a transient non-community water system privately owned. It is regulated by the MI state drinking water program.
How many people does Rousseau Bar serve?
Rousseau Bar reports serving 60 people through 1 service connection in Ontonagon County, Michigan.
Where does Rousseau Bar 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 Rousseau Bar have any drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in October 2024. 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 Rousseau Bar'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 11 violations for this system; none is health-based, and the most recent began in October 2024. For current results, consult EPA ECHO, or the MI state drinking water program.
Where can I find Rousseau Bar's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Rousseau Bar 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 Ontonagon County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ontonagon | Ontonagon | 2,607 | Community | Surface water |
| Mcmillan Township | Ontonagon | 391 | Community | Groundwater |
| Rockland Township | Ontonagon | 350 | Community | Groundwater |
| Bergland Township | Ontonagon | 210 | Community | Groundwater |
| Interior Township | Ontonagon | 200 | Community | Groundwater |
| North Coast Adventures Campground | Ontonagon | 180 | 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, “Rousseau Bar, PWSID MI2004566, Michigan”, https://aquacensus.com/water-systems/michigan/rousseau-bar-mi2004566 (data as of October 1, 2026).