Public water system · MI2005420
ActiveShupac Lake Cg #1
At a glance
Shupac Lake Cg #1 (PWSID MI2005420) is an active transient non-community water system in Crawford County, Michigan. It reports serving 40 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 3 violations for this system; none is health-based, and the most recent began in July 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
40
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Shupac Lake Cg #1 compare with other water systems in Crawford County?
By EPA's size categories, Shupac Lake Cg #1 is a very small system (500 people or fewer). Crawford County has 91 active public water systems. Its population served is well below the county average of 188 people per system, and accounts for 0.2% 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 Shupac Lake Cg #1 is well 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 Shupac Lake Cg #1?
EPA lists Shupac Lake Cg #1 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 Shupac Lake Cg #1 have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in July 2024. The violations listed here began between January 2022 and July 2024. By type: 2 monitoring and 1 monitoring and reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (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 |
|---|---|---|---|---|
| 2024-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-01-01 | 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.
Shupac Lake Cg #1: frequently asked questions
Who runs Shupac Lake Cg #1?
Shupac Lake Cg #1 (PWSID MI2005420) 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 Shupac Lake Cg #1 serve?
Shupac Lake Cg #1 reports serving 40 people through 1 service connection in Crawford County, Michigan.
Where does Shupac Lake Cg #1 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 Shupac Lake Cg #1 have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in July 2024. 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 Shupac Lake Cg #1'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; none is health-based, and the most recent began in July 2024. For current results, consult EPA ECHO, or the MI state drinking water program.
Where can I find Shupac Lake Cg #1's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Shupac Lake Cg #1 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 |
| Mdot - Grayling Rest Area, R403 | Crawford | 1,000 | Transient non-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 |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Shupac Lake Cg #1, PWSID MI2005420, Michigan”, https://aquacensus.com/water-systems/michigan/shupac-lake-cg-1-mi2005420 (data as of October 1, 2026).