Public water system · WI1110227
ActiveDurwards Glen Retreat
At a glance
Durwards Glen Retreat (PWSID WI1110227) is an active transient non-community water system in Columbia County, Wisconsin. It reports serving 53 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; 2 are health-based, and the most recent began in September 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
53
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Durwards Glen Retreat compare with other water systems in Columbia County?
By EPA's size categories, Durwards Glen Retreat is a very small system (500 people or fewer). Columbia County has 140 active public water systems. Its population served is well below the county average of 463 people per system, and accounts for less than 0.1% 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 Durwards Glen Retreat is about 63% 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. 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 Durwards Glen Retreat?
EPA lists Durwards Glen Retreat 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 Durwards Glen Retreat have drinking water violations?
EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in September 2015. The violations listed here began between January 1993 and September 2015. By type: 2 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (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 |
|---|---|---|---|---|
| 2015-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1994-01-05 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1993-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | 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.
Durwards Glen Retreat: frequently asked questions
Who runs Durwards Glen Retreat?
Durwards Glen Retreat (PWSID WI1110227) is a transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Durwards Glen Retreat serve?
Durwards Glen Retreat reports serving 53 people through 1 service connection in Columbia County, Wisconsin.
Where does Durwards Glen Retreat 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 Durwards Glen Retreat have any drinking water violations?
EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in September 2015. 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 Durwards Glen Retreat'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; 2 are health-based, and the most recent began in September 2015. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Durwards Glen Retreat's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Durwards Glen Retreat 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 |
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, “Durwards Glen Retreat, PWSID WI1110227, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/durwards-glen-retreat-wi1110227 (data as of October 1, 2026).