Public water system · WI6630343
ActiveRockton Bar
At a glance
Rockton Bar (PWSID WI6630343) is an active transient non-community water system in Vernon County, Wisconsin. It reports serving 40 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in October 2009.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
40
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Rockton Bar compare with other water systems in Vernon County?
By EPA's size categories, Rockton Bar is a very small system (500 people or fewer). Vernon County has 66 active public water systems. Its population served is well below the county average of 255 people per system, and accounts for 0.2% of the 16,796 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 Rockton Bar 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 Rockton Bar?
EPA lists Rockton Bar 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. 41 of the 66 active systems in Vernon County (62%) are also privately owned.
Does Rockton Bar have drinking water violations?
EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in October 2009. The violations listed here began between August 1995 and October 2009. By type: 2 public notice, recordkeeping or other, 2 monitoring and reporting and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 6 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 |
|---|---|---|---|---|
| 2009-10-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2009-10-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 6 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.
Rockton Bar: frequently asked questions
Who runs Rockton Bar?
Rockton Bar (PWSID WI6630343) is a transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Rockton Bar serve?
Rockton Bar reports serving 40 people through 1 service connection in Vernon County, Wisconsin.
Where does Rockton Bar 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 Rockton Bar have any drinking water violations?
EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in October 2009. 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 Rockton Bar'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 6 violations for this system; 2 are health-based, and the most recent began in October 2009. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Rockton Bar's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Rockton Bar 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 Vernon County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Viroqua Waterworks | Vernon | 4,362 | Community | Groundwater |
| Westby Waterworks | Vernon | 2,400 | Community | Groundwater |
| Hillsboro Waterworks | Vernon | 1,325 | Community | Groundwater |
| Stoddard Waterworks | Vernon | 793 | Community | Groundwater |
| Coon Valley Waterworks | Vernon | 765 | Community | Groundwater |
| La Farge Waterworks | Vernon | 712 | 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, “Rockton Bar, PWSID WI6630343, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/rockton-bar-wi6630343 (data as of October 1, 2026).