Public water system · WI1230043
ActiveDecatur Swiss Cheese Coop
At a glance
Decatur Swiss Cheese Coop (PWSID WI1230043) is an active non-transient non-community water system in Green County, Wisconsin. It reports serving 55 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
55
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Decatur Swiss Cheese Coop compare with other water systems in Green County?
By EPA's size categories, Decatur Swiss Cheese Coop is a very small system (500 people or fewer). Green County has 52 active public water systems. Its population served is well below the county average of 540 people per system, and accounts for 0.2% of the 28,087 people reported by systems filed under the county. Across Wisconsin, the 11,056 active systems average 469 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Decatur Swiss Cheese Coop is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Wisconsin has 891 active non-transient non-community water systems, 8.1% 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 Decatur Swiss Cheese Coop?
EPA lists Decatur Swiss Cheese Coop 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. 39 of the 52 active systems in Green County (75%) are also privately owned.
Does Decatur Swiss Cheese Coop have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2026. The violations listed here began between July 2015 and January 2026. By type: 12 monitoring and reporting. The contaminants or rules involved are Lead and Copper Rule, Toluene, Ethylbenzene and Styrene. EPA lists 12 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 |
|---|---|---|---|---|
| 2026-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toluenecode 2991 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | p-Dichlorobenzenecode 2969 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | o-Dichlorobenzenecode 2968 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dichloromethanecode 2964 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,2-Trichloroethanecode 2985 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Tetrachloroethylenecode 2987 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzenecode 2990 | No | Resolved |
The 12 most recent 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.
Decatur Swiss Cheese Coop: frequently asked questions
Who runs Decatur Swiss Cheese Coop?
Decatur Swiss Cheese Coop (PWSID WI1230043) is a non-transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Decatur Swiss Cheese Coop serve?
Decatur Swiss Cheese Coop reports serving 55 people through 1 service connection in Green County, Wisconsin.
Where does Decatur Swiss Cheese Coop 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 Decatur Swiss Cheese Coop have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2026. 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 Decatur Swiss Cheese Coop'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2026. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Decatur Swiss Cheese Coop's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Decatur Swiss Cheese Coop is a non-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 Green County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Monroe Waterworks | Green | 10,780 | Community | Groundwater |
| Brodhead Waterworks | Green | 3,216 | Community | Groundwater |
| Belleville Waterworks | Green | 2,712 | Community | Groundwater |
| New Glarus Waterworks | Green | 2,348 | Community | Groundwater |
| Brooklyn Waterworks | Green | 1,524 | Community | Groundwater |
| Monticello Waterworks | Green | 1,217 | 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, “Decatur Swiss Cheese Coop, PWSID WI1230043, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/decatur-swiss-cheese-coop-wi1230043 (data as of October 1, 2026).