Public water system · MI2037949
ActiveO-N Minerals(Mi)/Carmeuse-Cedarville Qua
At a glance
O-N Minerals(Mi)/Carmeuse-Cedarville Qua (PWSID MI2037949) is an active non-transient non-community water system in Mackinac County, Michigan. It reports serving 25 people through 3 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 5 violations for this system; 2 are health-based, and the most recent began in January 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
3
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does O-N Minerals(Mi)/Carmeuse-Cedarville Qua compare with other water systems in Mackinac County?
By EPA's size categories, O-N Minerals(Mi)/Carmeuse-Cedarville Qua is a very small system (500 people or fewer). Mackinac County has 113 active public water systems. Its population served is well below the county average of 110 people per system, and accounts for 0.2% of the 12,387 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 O-N Minerals(Mi)/Carmeuse-Cedarville Qua 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 O-N Minerals(Mi)/Carmeuse-Cedarville Qua?
EPA lists O-N Minerals(Mi)/Carmeuse-Cedarville Qua 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. 96 of the 113 active systems in Mackinac County (85%) are also privately owned.
Does O-N Minerals(Mi)/Carmeuse-Cedarville Qua have drinking water violations?
EPA's records list 5 violations for this system; 2 are health-based, and the most recent began in January 2019. The violations listed here began between July 1995 and January 2019. By type: 3 monitoring and reporting and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Lead and Copper Rule (3 of them). EPA lists 3 as resolved, 1 as unaddressed and 1 as archived. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2019-01-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Unaddressed |
| 2018-01-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2010-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2008-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1995-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
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.
O-N Minerals(Mi)/Carmeuse-Cedarville Qua: frequently asked questions
Who runs O-N Minerals(Mi)/Carmeuse-Cedarville Qua?
O-N Minerals(Mi)/Carmeuse-Cedarville Qua (PWSID MI2037949) is a non-transient non-community water system privately owned. It is regulated by the MI state drinking water program.
How many people does O-N Minerals(Mi)/Carmeuse-Cedarville Qua serve?
O-N Minerals(Mi)/Carmeuse-Cedarville Qua reports serving 25 people through 3 service connections in Mackinac County, Michigan.
Where does O-N Minerals(Mi)/Carmeuse-Cedarville Qua 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 O-N Minerals(Mi)/Carmeuse-Cedarville Qua have any drinking water violations?
EPA's records list 5 violations for this system; 2 are health-based, and the most recent began in January 2019. 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 O-N Minerals(Mi)/Carmeuse-Cedarville Qua'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; 2 are health-based, and the most recent began in January 2019. For current results, consult EPA ECHO, or the MI state drinking water program.
Where can I find O-N Minerals(Mi)/Carmeuse-Cedarville Qua's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. O-N Minerals(Mi)/Carmeuse-Cedarville Qua 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 Mackinac County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| St. Ignace | Mackinac | 2,987 | Community | Surface water |
| Mackinac Island | Mackinac | 583 | Community | Surface water |
| Engadine School | Mackinac | 552 | Non-transient non-community | Groundwater |
| Les Cheneaux School | Mackinac | 336 | Non-transient non-community | Groundwater |
| Mdot - Gros Cap Park, P219 | Mackinac | 200 | Transient non-community | Groundwater |
| Hiawatha Sportmen'S Club-Grp 1 (7-16) | Mackinac | 200 | 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, “O-N Minerals(Mi)/Carmeuse-Cedarville Qua, PWSID MI2037949, Michigan”, https://aquacensus.com/water-systems/michigan/o-n-minerals-mi-carmeuse-cedarville-qua-mi2037949 (data as of October 1, 2026).