Public water system · WI1540228
ActiveRoyce Dallman Park
At a glance
Royce Dallman Park (PWSID WI1540228) is an active transient non-community water system in Rock County, Wisconsin. It reports serving 50 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 2 violations for this system; 1 is health-based, and the most recent began in July 2008.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
50
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Royce Dallman Park compare with other water systems in Rock County?
By EPA's size categories, Royce Dallman Park is a very small system (500 people or fewer). Rock County has 156 active public water systems. Its population served is well below the county average of 952 people per system, and accounts for less than 0.1% of the 148,563 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 Royce Dallman Park is about 65% 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 Royce Dallman Park?
EPA lists Royce Dallman 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. 27 of the 156 active systems in Rock County (17%) are also owned by a local government.
Does Royce Dallman Park have drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in July 2008. The violations listed here began between January 1995 and July 2008. By type: 1 contaminant level above the legal limit and 1 monitoring and reporting. The contaminants or rules involved are Total coliform bacteria (TCR) and Nitrite. EPA lists 2 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 |
|---|---|---|---|---|
| 2008-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
All 2 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.
Royce Dallman Park: frequently asked questions
Who runs Royce Dallman Park?
Royce Dallman Park (PWSID WI1540228) 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 Royce Dallman Park serve?
Royce Dallman Park reports serving 50 people through 1 service connection in Rock County, Wisconsin.
Where does Royce Dallman 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 Royce Dallman Park have any drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in July 2008. 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 Royce Dallman 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 2 violations for this system; 1 is health-based, and the most recent began in July 2008. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Royce Dallman Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Royce Dallman 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 Rock County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Janesville Water Utility | Rock | 64,415 | Community | Groundwater |
| Beloit City of | Rock | 36,677 | Community | Groundwater |
| Evansville Waterworks | Rock | 5,703 | Community | Groundwater |
| Milton Waterworks | Rock | 5,588 | Community | Groundwater |
| Edgerton Waterworks | Rock | 5,512 | Community | Groundwater |
| Wi Dot Rest Area 22 Turtle | Rock | 3,005 | 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, “Royce Dallman Park, PWSID WI1540228, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/royce-dallman-park-wi1540228 (data as of October 1, 2026).