Public water system · WI1130305
ActiveDane Co Old Halfway Prairie Park
At a glance
Dane Co Old Halfway Prairie Park (PWSID WI1130305) is an active transient non-community water system in Dane County, Wisconsin. It reports serving 25 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is health-based, and the most recent began in August 1998.
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 Dane Co Old Halfway Prairie Park compare with other water systems in Dane County?
By EPA's size categories, Dane Co Old Halfway Prairie Park is a very small system (500 people or fewer). Dane County has 300 active public water systems. Its population served is well below the county average of 1,742 people per system, and accounts for less than 0.1% of the 522,696 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 Dane Co Old Halfway Prairie Park 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. 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 Dane Co Old Halfway Prairie Park?
EPA lists Dane Co Old Halfway Prairie Park as owned by a local government. 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. 74 of the 300 active systems in Dane County (25%) are also owned by a local government.
Does Dane Co Old Halfway Prairie Park have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in August 1998. By type: 1 contaminant level above the legal limit. The contaminant or rule involved is Total coliform bacteria (TCR). EPA lists 1 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 |
|---|---|---|---|---|
| 1998-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
The one violation in EPA's records.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.
Dane Co Old Halfway Prairie Park: frequently asked questions
Who runs Dane Co Old Halfway Prairie Park?
Dane Co Old Halfway Prairie Park (PWSID WI1130305) is a transient non-community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Dane Co Old Halfway Prairie Park serve?
Dane Co Old Halfway Prairie Park reports serving 25 people through 1 service connection in Dane County, Wisconsin.
Where does Dane Co Old Halfway Prairie Park 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 Dane Co Old Halfway Prairie Park have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in August 1998. 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 Dane Co Old Halfway Prairie Park'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 one violation for this system; it is health-based, and the most recent began in August 1998. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Dane Co Old Halfway Prairie Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Dane Co Old Halfway Prairie Park 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 Dane County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Madison Water Utility | Dane | 272,000 | Community | Groundwater |
| Sun Prairie Utilities | Dane | 39,300 | Community | Groundwater |
| Fitchburg Utility Dist 1 | Dane | 24,500 | Community | Groundwater |
| Middleton Waterworks | Dane | 23,868 | Community | Groundwater |
| Waunakee Waterworks | Dane | 14,879 | Community | Groundwater |
| Verona Waterworks | Dane | 14,030 | 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, “Dane Co Old Halfway Prairie Park, PWSID WI1130305, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/dane-co-old-halfway-prairie-park-wi1130305 (data as of October 1, 2026).