Public water system · MI2067246
ActiveRathmourne Dairy LLC-12 Medina
At a glance
Rathmourne Dairy LLC-12 Medina (PWSID MI2067246) is an active non-transient non-community water system in Lenawee County, Michigan. It reports serving 25 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in October 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Rathmourne Dairy LLC-12 Medina compare with other water systems in Lenawee County?
By EPA's size categories, Rathmourne Dairy LLC-12 Medina is a very small system (500 people or fewer). Lenawee County has 182 active public water systems. Its population served is well below the county average of 437 people per system, and accounts for less than 0.1% 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 non-transient non-community water system reports serving 430 people, so Rathmourne Dairy LLC-12 Medina is well below 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 Rathmourne Dairy LLC-12 Medina?
EPA lists Rathmourne Dairy LLC-12 Medina 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. 162 of the 182 active systems in Lenawee County (89%) are also privately owned.
Does Rathmourne Dairy LLC-12 Medina have drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in October 2021. The violations listed here began between July 2018 and October 2021. By type: 1 contaminant level above the legal limit and 1 monitoring. The contaminant or rule involved most often is Revised Total Coliform Rule (2 of them). EPA lists 2 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 |
|---|---|---|---|---|
| 2021-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, E. coli (RTCR) · code 1A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2018-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
All 2 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.
Rathmourne Dairy LLC-12 Medina: frequently asked questions
Who runs Rathmourne Dairy LLC-12 Medina?
Rathmourne Dairy LLC-12 Medina (PWSID MI2067246) is a non-transient non-community water system privately owned. It is regulated by the MI state drinking water program.
How many people does Rathmourne Dairy LLC-12 Medina serve?
Rathmourne Dairy LLC-12 Medina reports serving 25 people through 1 service connection in Lenawee County, Michigan.
Where does Rathmourne Dairy LLC-12 Medina 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 Rathmourne Dairy LLC-12 Medina have any drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in October 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 Rathmourne Dairy LLC-12 Medina'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 2 violations for this system; 1 is health-based, and the most recent began in October 2021. For current results, consult EPA ECHO, or the MI state drinking water program.
Where can I find Rathmourne Dairy LLC-12 Medina's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Rathmourne Dairy LLC-12 Medina 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 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, “Rathmourne Dairy LLC-12 Medina, PWSID MI2067246, Michigan”, https://aquacensus.com/water-systems/michigan/rathmourne-dairy-llc-12-medina-mi2067246 (data as of October 1, 2026).