Public water system · WI1110337
ActivePortage One Stop
At a glance
Portage One Stop (PWSID WI1110337) is an active transient non-community water system in Columbia County, Wisconsin. It reports serving 203 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
203
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Portage One Stop compare with other water systems in Columbia County?
By EPA's size categories, Portage One Stop is a very small system (500 people or fewer). Columbia County has 140 active public water systems. Its population served is about 56% below the county average of 463 people per system, and accounts for 0.3% of the 64,780 people reported by systems filed under the county. Across Wisconsin, the 11,056 active systems average 469 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Portage One Stop is about 41% above 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. Wisconsin has 9,112 active transient non-community water systems, 82% of the state's 11,056 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 10,978 Wisconsin systems (99%) list groundwater as their primary source.
Who owns and regulates Portage One Stop?
EPA lists Portage One Stop as privately owned. The WI state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 114 of the 140 active systems in Columbia County (81%) are also privately owned.
Does Portage One Stop 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 Portage One Stop. For the latest compliance status, check EPA ECHO for current compliance history.
Portage One Stop: frequently asked questions
Who runs Portage One Stop?
Portage One Stop (PWSID WI1110337) is a transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Portage One Stop serve?
Portage One Stop reports serving 203 people through 1 service connection in Columbia County, Wisconsin.
Where does Portage One Stop 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 Portage One Stop have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Portage One Stop'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 WI state drinking water program.
Where can I find Portage One Stop's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Portage One Stop 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 Columbia County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Portage Waterworks | Columbia | 10,437 | Community | Groundwater |
| Columbus Utilities | Columbia | 5,173 | Community | Groundwater |
| Wi Dot Rest Area 12 Dekorra West Bound | Columbia | 3,255 | Transient non-community | Groundwater |
| Wisconsin Dells Waterworks | Columbia | 3,232 | Community | Groundwater |
| Lodi Waterworks | Columbia | 3,146 | Community | Groundwater |
| Poynette Waterworks | Columbia | 2,520 | 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, “Portage One Stop, PWSID WI1110337, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/portage-one-stop-wi1110337 (data as of October 1, 2026).