Public water system · MI2022735
ActiveIosco Resa
At a glance
Iosco Resa (PWSID MI2022735) is an active non-transient non-community water system in Iosco County, Michigan. It reports serving 169 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 3 violations for this system; none is health-based, and the most recent began in December 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
169
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Iosco Resa compare with other water systems in Iosco County?
By EPA's size categories, Iosco Resa is a very small system (500 people or fewer). Iosco County has 81 active public water systems. Its population served is about 42% below the county average of 294 people per system, and accounts for 0.7% of the 23,789 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 Iosco Resa is about 61% 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 Iosco Resa?
EPA lists Iosco Resa 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. 70 of the 81 active systems in Iosco County (86%) are also privately owned.
Does Iosco Resa have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in December 2024. The violations listed here began between July 2021 and December 2024. By type: 2 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Lead and Copper Rule (2 of them). EPA lists 2 as unaddressed and 1 as resolved. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement. 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 |
|---|---|---|---|---|
| 2024-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Unaddressed |
| 2024-10-11 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Unaddressed |
| 2021-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | 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.
Iosco Resa: frequently asked questions
Who runs Iosco Resa?
Iosco Resa (PWSID MI2022735) is a non-transient non-community water system privately owned. It is regulated by the MI state drinking water program.
How many people does Iosco Resa serve?
Iosco Resa reports serving 169 people through 1 service connection in Iosco County, Michigan.
Where does Iosco Resa 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 Iosco Resa have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in December 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 Iosco Resa'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 December 2024. For current results, consult EPA ECHO, or the MI state drinking water program.
Where can I find Iosco Resa's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Iosco Resa 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 Iosco County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Oscoda Township | Iosco | 6,997 | Community | Purchased surface water |
| East Tawas, City of | Iosco | 2,663 | Community | Purchased surface water |
| Au Sable Township | Iosco | 2,370 | Community | Purchased surface water |
| Old Orchard Park Campground | Iosco | 2,000 | Transient non-community | Groundwater |
| Tawas City, City of | Iosco | 1,834 | Community | Purchased surface water |
| Whittemore/Prescott School Complex | Iosco | 860 | Non-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, “Iosco Resa, PWSID MI2022735, Michigan”, https://aquacensus.com/water-systems/michigan/iosco-resa-mi2022735 (data as of October 1, 2026).