Public water system · MI2012520
ActiveMdot - Grayling Rest Area, R403
At a glance
Mdot - Grayling Rest Area, R403 (PWSID MI2012520) is an active transient non-community water system in Crawford 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 5 violations for this system; none is health-based, and the most recent began in April 2017.
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 - Grayling Rest Area, R403 compare with other water systems in Crawford County?
By EPA's size categories, Mdot - Grayling Rest Area, R403 is a small system (501 to 3,300 people). Crawford County has 91 active public water systems, and Mdot - Grayling Rest Area, R403 is the 2nd-largest of them by population served. Its population served is about 5.3 times the county average of 188 people per system, and accounts for 5.8% of the 17,125 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 - Grayling Rest Area, R403 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 - Grayling Rest Area, R403?
EPA lists Mdot - Grayling Rest Area, R403 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. 34 of the 91 active systems in Crawford County (37%) are also owned by a state government.
Does Mdot - Grayling Rest Area, R403 have drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in April 2017. The violations listed here began between January 1997 and April 2017. By type: 4 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Nitrate (2 of them). EPA lists 5 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 |
|---|---|---|---|---|
| 2017-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2015-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2011-08-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1997-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 5 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 - Grayling Rest Area, R403: frequently asked questions
Who runs Mdot - Grayling Rest Area, R403?
Mdot - Grayling Rest Area, R403 (PWSID MI2012520) 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 - Grayling Rest Area, R403 serve?
Mdot - Grayling Rest Area, R403 reports serving 1,000 people through 2 service connections in Crawford County, Michigan.
Where does Mdot - Grayling Rest Area, R403 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 - Grayling Rest Area, R403 have any drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in April 2017. 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 - Grayling Rest Area, R403'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 5 violations for this system; none is health-based, and the most recent began in April 2017. For current results, consult EPA ECHO, or the MI state drinking water program.
Where can I find Mdot - Grayling Rest Area, R403's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mdot - Grayling Rest Area, R403 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 Crawford County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Grayling, City of | Crawford | 1,884 | Community | Groundwater |
| North Higgins Lake State Park(West) | Crawford | 900 | Transient non-community | Groundwater |
| North Higgins Lake State Park (East) | Crawford | 900 | Transient non-community | Groundwater |
| Dtmb-Dma Camp Grayling - Cantonment | Crawford | 550 | Non-transient non-community | Groundwater |
| Grayling High School | Crawford | 530 | Non-transient non-community | Groundwater |
| North Higgins Lake State Park | Crawford | 500 | Transient non-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 - Grayling Rest Area, R403, PWSID MI2012520, Michigan”, https://aquacensus.com/water-systems/michigan/mdot-grayling-rest-area-r403-mi2012520 (data as of October 1, 2026).