Public water system · WI6090703
ActiveCaseys 4 Corners
At a glance
Caseys 4 Corners (PWSID WI6090703) is an active transient non-community water system in Chippewa County, Wisconsin. It reports serving 50 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 10 violations for this system; 5 are health-based, and the most recent began in October 2025.
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 Caseys 4 Corners compare with other water systems in Chippewa County?
By EPA's size categories, Caseys 4 Corners is a very small system (500 people or fewer). Chippewa County has 218 active public water systems. Its population served is well below the county average of 237 people per system, and accounts for less than 0.1% of the 51,682 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 Caseys 4 Corners 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 Caseys 4 Corners?
EPA lists Caseys 4 Corners 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. 183 of the 218 active systems in Chippewa County (84%) are also privately owned.
Does Caseys 4 Corners have drinking water violations?
EPA's records list 10 violations for this system; 5 are health-based, and the most recent began in October 2025. The violations listed here began between September 1996 and October 2025. By type: 5 contaminant level above the legal limit, 4 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Nitrate (5 of them). EPA lists 9 as resolved and 1 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Nitratecode 1040 | Yes | Archived |
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2012-11-05 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2012-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Nitratecode 1040 | Yes | Resolved |
| 2000-09-21 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1997-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1997-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Nitrate-Nitritecode 1038 | Yes | Resolved |
| 1996-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 10 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.
Caseys 4 Corners: frequently asked questions
Who runs Caseys 4 Corners?
Caseys 4 Corners (PWSID WI6090703) is a transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Caseys 4 Corners serve?
Caseys 4 Corners reports serving 50 people through 1 service connection in Chippewa County, Wisconsin.
Where does Caseys 4 Corners 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 Caseys 4 Corners have any drinking water violations?
EPA's records list 10 violations for this system; 5 are health-based, and the most recent began in October 2025. 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 Caseys 4 Corners' 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 10 violations for this system; 5 are health-based, and the most recent began in October 2025. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Caseys 4 Corners' water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Caseys 4 Corners 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 Chippewa County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Chippewa Falls Waterworks | Chippewa | 13,375 | Community | Groundwater |
| Lake Hallie Waterworks Village of | Chippewa | 6,701 | Community | Groundwater |
| Bloomer Waterworks | Chippewa | 3,680 | Community | Groundwater |
| Stanley Waterworks | Chippewa | 3,500 | Community | Groundwater |
| Cornell Waterworks | Chippewa | 1,390 | Community | Groundwater |
| Cadott Waterworks | Chippewa | 1,352 | 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, “Caseys 4 Corners, PWSID WI6090703, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/caseys-4-corners-wi6090703 (data as of October 1, 2026).