Public water system · MI2027772
ActiveLyon Township-Park
At a glance
Lyon Township-Park (PWSID MI2027772) is an active transient non-community water system in Roscommon County, Michigan. It reports serving 50 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
50
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Lyon Township-Park compare with other water systems in Roscommon County?
By EPA's size categories, Lyon Township-Park is a very small system (500 people or fewer). Roscommon County has 222 active public water systems. Its population served is well below the county average of 228 people per system, and accounts for less than 0.1% of the 50,696 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 Lyon Township-Park is about 65% 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 Lyon Township-Park?
EPA lists Lyon Township-Park 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. 212 of the 222 active systems in Roscommon County (95%) are also privately owned.
Does Lyon Township-Park have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2023. The violations listed here began between January 2003 and October 2023. By type: 6 monitoring and reporting, 5 monitoring and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Revised Total Coliform Rule (5 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 |
|---|---|---|---|---|
| 2023-10-01 | MonitoringMonitoring, Additional Routine (RTCR) · code 3B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2019-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2007-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2003-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | 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.
Lyon Township-Park: frequently asked questions
Who runs Lyon Township-Park?
Lyon Township-Park (PWSID MI2027772) is a transient non-community water system privately owned. It is regulated by the MI state drinking water program.
How many people does Lyon Township-Park serve?
Lyon Township-Park reports serving 50 people through 1 service connection in Roscommon County, Michigan.
Where does Lyon Township-Park 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 Lyon Township-Park have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 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 Lyon Township-Park'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, one is health-based, and the most recent began in October 2023. For current results, consult EPA ECHO, or the MI state drinking water program.
Where can I find Lyon Township-Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Lyon Township-Park 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 Roscommon County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| South Higgins Lake State Park Campground | Roscommon | 5,024 | Transient non-community | Groundwater |
| South Higgins Lake State Park Store/Hq | Roscommon | 2,000 | Transient non-community | Groundwater |
| Mcdonalds (Prudenville) | Roscommon | 1,500 | Non-transient non-community | Groundwater |
| Mcdonalds (Houghton Lake) | Roscommon | 1,200 | Non-transient non-community | Groundwater |
| Roscommon, Village of | Roscommon | 1,075 | Community | Groundwater |
| Home Depot #2769 | Roscommon | 1,000 | Non-transient non-community | Groundwater |
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, “Lyon Township-Park, PWSID MI2027772, Michigan”, https://aquacensus.com/water-systems/michigan/lyon-township-park-mi2027772 (data as of October 1, 2026).