Public water system · MI2026574
ActiveEmmett Koa
At a glance
Emmett Koa (PWSID MI2026574) is an active transient non-community water system in St. Clair County, Michigan. It reports serving 25 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Emmett Koa compare with other water systems in St. Clair County?
By EPA's size categories, Emmett Koa is a very small system (500 people or fewer). St. Clair County has 96 active public water systems. Its population served is well below the county average of 1,246 people per system, and accounts for less than 0.1% of the 119,605 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 Emmett Koa 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 Emmett Koa?
EPA lists Emmett Koa 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. 76 of the 96 active systems in St. Clair County (79%) are also privately owned.
Does Emmett Koa have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Emmett Koa. For the latest compliance status, check EPA ECHO for current compliance history.
Emmett Koa: frequently asked questions
Who runs Emmett Koa?
Emmett Koa (PWSID MI2026574) is a transient non-community water system privately owned. It is regulated by the MI state drinking water program.
How many people does Emmett Koa serve?
Emmett Koa reports serving 25 people through 1 service connection in St. Clair County, Michigan.
Where does Emmett Koa 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 Emmett Koa have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Emmett Koa'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 Safe Drinking Water Act records list no violations for this system. For current results, consult EPA ECHO, or the MI state drinking water program.
Where can I find Emmett Koa's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Emmett Koa 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 St. Clair County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Port Huron, City of | St. Clair | 28,983 | Community | Surface water |
| Port Huron Township | St. Clair | 10,654 | Community | Purchased surface water |
| Marysville, City of | St. Clair | 9,959 | Community | Surface water |
| Clay Township | St. Clair | 9,866 | Community | Purchased surface water |
| Ira Township | St. Clair | 6,510 | Community | Surface water |
| St. Clair Water and Sewer Authority | St. Clair | 5,847 | Community | Surface water |
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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, “Emmett Koa, PWSID MI2026574, Michigan”, https://aquacensus.com/water-systems/michigan/emmett-koa-mi2026574 (data as of October 1, 2026).