Public water system · MI2000479
ActiveMdot - Cass River R.P., P603
At a glance
Mdot - Cass River R.P., P603 (PWSID MI2000479) is an active transient non-community water system in Tuscola County, Michigan. It reports serving 115 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list 8 violations for this system; none is health-based, and the most recent began in January 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
115
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Mdot - Cass River R.P., P603 compare with other water systems in Tuscola County?
By EPA's size categories, Mdot - Cass River R.P., P603 is a very small system (500 people or fewer). Tuscola County has 91 active public water systems. Its population served is about 61% below the county average of 293 people per system, and accounts for 0.4% of the 26,657 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 - Cass River R.P., P603 is about 20% 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 Mdot - Cass River R.P., P603?
EPA lists Mdot - Cass River R.P., P603 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. 1 of the 91 active systems in Tuscola County (1.1%) are also owned by a state government.
Does Mdot - Cass River R.P., P603 have drinking water violations?
EPA's records list 8 violations for this system; none is health-based, and the most recent began in January 2015. The violations listed here began between June 2000 and January 2015. By type: 8 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (5 of them). EPA lists 8 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 |
|---|---|---|---|---|
| 2015-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2004-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2000-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2000-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2000-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2000-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 8 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 - Cass River R.P., P603: frequently asked questions
Who runs Mdot - Cass River R.P., P603?
Mdot - Cass River R.P., P603 (PWSID MI2000479) 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 - Cass River R.P., P603 serve?
Mdot - Cass River R.P., P603 reports serving 115 people through 1 service connection in Tuscola County, Michigan.
Where does Mdot - Cass River R.P., P603 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 - Cass River R.P., P603 have any drinking water violations?
EPA's records list 8 violations for this system; none is health-based, and the most recent began in January 2015. 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 - Cass River R.P., P603'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 8 violations for this system; none is health-based, and the most recent began in January 2015. For current results, consult EPA ECHO, or the MI state drinking water program.
Where can I find Mdot - Cass River R.P., P603's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mdot - Cass River R.P., P603 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 Tuscola County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Caro, City of | Tuscola | 5,029 | Community | Groundwater |
| Vassar, City of | Tuscola | 2,697 | Community | Groundwater |
| Cass City, Village of | Tuscola | 2,428 | Community | Groundwater |
| G.C. Express | Tuscola | 1,400 | Transient non-community | Groundwater |
| Millington, Village of | Tuscola | 1,072 | Community | Groundwater |
| Mayville, Village of | Tuscola | 950 | 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, “Mdot - Cass River R.P., P603, PWSID MI2000479, Michigan”, https://aquacensus.com/water-systems/michigan/mdot-cass-river-r-p-p603-mi2000479 (data as of October 1, 2026).