Public water system · MI2104763
ActiveMdot - Clarkston, R904
At a glance
Mdot - Clarkston, R904 (PWSID MI2104763) is an active transient non-community water system in Oakland County, Michigan. It reports serving 1,000 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 3 violations for this system; 1 is health-based, and the most recent began in October 2013.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,000
Service connections
2
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Mdot - Clarkston, R904 compare with other water systems in Oakland County?
By EPA's size categories, Mdot - Clarkston, R904 is a small system (501 to 3,300 people). Oakland County has 734 active public water systems. Its population served is about 36% below the county average of 1,561 people per system, and accounts for less than 0.1% of the 1,145,905 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 Mdot - Clarkston, R904 is about 6.9 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 Mdot - Clarkston, R904?
EPA lists Mdot - Clarkston, R904 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. 40 of the 734 active systems in Oakland County (5.4%) are also owned by a state government.
Does Mdot - Clarkston, R904 have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in October 2013. The violations listed here began between January 1995 and October 2013. By type: 2 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Nitrate (2 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 2013-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2004-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1995-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
All 3 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.
Mdot - Clarkston, R904: frequently asked questions
Who runs Mdot - Clarkston, R904?
Mdot - Clarkston, R904 (PWSID MI2104763) 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 Mdot - Clarkston, R904 serve?
Mdot - Clarkston, R904 reports serving 1,000 people through 2 service connections in Oakland County, Michigan.
Where does Mdot - Clarkston, R904 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 Mdot - Clarkston, R904 have any drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in October 2013. 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 Mdot - Clarkston, R904'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 3 violations for this system; 1 is health-based, and the most recent began in October 2013. For current results, consult EPA ECHO, or the MI state drinking water program.
Where can I find Mdot - Clarkston, R904's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mdot - Clarkston, R904 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 Oakland County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Troy | Oakland | 85,854 | Community | Purchased surface water |
| Rochester Hills | Oakland | 74,000 | Community | Purchased surface water |
| Waterford Township | Oakland | 73,441 | Community | Groundwater |
| Southfield | Oakland | 71,739 | Community | Purchased surface water |
| Pontiac | Oakland | 63,776 | Community | Purchased surface water |
| Royal Oak, City of | Oakland | 57,236 | 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, “Mdot - Clarkston, R904, PWSID MI2104763, Michigan”, https://aquacensus.com/water-systems/michigan/mdot-clarkston-r904-mi2104763 (data as of October 1, 2026).