Public water system · WI7010545
ActiveCedar Shack
At a glance
Cedar Shack (PWSID WI7010545) is an active transient non-community water system in Adams County, Wisconsin. It reports serving 33 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in August 2001.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
33
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Cedar Shack compare with other water systems in Adams County?
By EPA's size categories, Cedar Shack is a very small system (500 people or fewer). Adams County has 202 active public water systems. Its population served is well below the county average of 119 people per system, and accounts for 0.1% of the 24,041 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 Cedar Shack 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 Cedar Shack?
EPA lists Cedar Shack 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. 184 of the 202 active systems in Adams County (91%) are also privately owned.
Does Cedar Shack have drinking water violations?
EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in August 2001. The violations listed here began between January 1995 and August 2001. By type: 8 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 9 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 |
|---|---|---|---|---|
| 2001-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2000-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2000-06-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1996-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 1996-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1996-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 1995-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
All 9 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.
Cedar Shack: frequently asked questions
Who runs Cedar Shack?
Cedar Shack (PWSID WI7010545) is a transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Cedar Shack serve?
Cedar Shack reports serving 33 people through 1 service connection in Adams County, Wisconsin.
Where does Cedar Shack 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 Cedar Shack have any drinking water violations?
EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in August 2001. 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 Cedar Shack'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 9 violations for this system; 1 is health-based, and the most recent began in August 2001. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Cedar Shack's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Cedar Shack 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 Adams County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Rome Water Utility | Adams | 2,775 | Community | Groundwater |
| Adams Waterworks | Adams | 1,847 | Community | Groundwater |
| Federal Correctional Institution | Adams | 1,550 | Community | Groundwater |
| Friendship Waterworks | Adams | 781 | Community | Purchased groundwater |
| Emrick Lake Cmpgrnd Main Well | Adams | 750 | Transient non-community | Groundwater |
| Emrick Lake Cmpgrnd Reserve Area | Adams | 750 | 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, “Cedar Shack, PWSID WI7010545, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/cedar-shack-wi7010545 (data as of October 1, 2026).