Public water system · MI2012746
ActiveDnr - Hayes State Park
At a glance
Dnr - Hayes State Park (PWSID MI2012746) is an active transient non-community water system in Lenawee County, Michigan. It reports serving 784 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
784
Service connections
2
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Dnr - Hayes State Park compare with other water systems in Lenawee County?
By EPA's size categories, Dnr - Hayes State Park is a small system (501 to 3,300 people). Lenawee County has 182 active public water systems. Its population served is about 79% above the county average of 437 people per system, and accounts for 1% of the 79,516 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 Dnr - Hayes State Park is about 5.4 times 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 Dnr - Hayes State Park?
EPA lists Dnr - Hayes State Park as owned by a state 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 182 active systems in Lenawee County (1.6%) are also owned by a state government.
Does Dnr - Hayes State Park have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2019. By type: 1 monitoring. The contaminant or rule involved is Revised Total Coliform Rule. EPA lists 1 as archived. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2019-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
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.
Dnr - Hayes State Park: frequently asked questions
Who runs Dnr - Hayes State Park?
Dnr - Hayes State Park (PWSID MI2012746) is a transient non-community water system owned by a state government. It is regulated by the MI state drinking water program.
How many people does Dnr - Hayes State Park serve?
Dnr - Hayes State Park reports serving 784 people through 2 service connections in Lenawee County, Michigan.
Where does Dnr - Hayes State 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 Dnr - Hayes State Park 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 October 2019. 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 Dnr - Hayes State 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. EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2019. For current results, consult EPA ECHO, or the MI state drinking water program.
Where can I find Dnr - Hayes State Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Dnr - Hayes State 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 Lenawee County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Adrian | Lenawee | 23,663 | Community | Surface water |
| Tecumseh | Lenawee | 8,521 | Community | Groundwater |
| The Groves of Michigan | Lenawee | 6,460 | Transient non-community | Groundwater |
| Madison Township | Lenawee | 3,480 | Community | Groundwater |
| Blissfield | Lenawee | 3,276 | Community | Surface water |
| Clinton | Lenawee | 2,336 | 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, “Dnr - Hayes State Park, PWSID MI2012746, Michigan”, https://aquacensus.com/water-systems/michigan/dnr-hayes-state-park-mi2012746 (data as of October 1, 2026).