Public water system · WI1571087
ActiveDon Larson Chevrolet Buick Gmc
At a glance
Don Larson Chevrolet Buick Gmc (PWSID WI1571087) is an active non-transient non-community water system in Sauk County, Wisconsin. It reports serving 60 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 2011.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
60
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Don Larson Chevrolet Buick Gmc compare with other water systems in Sauk County?
By EPA's size categories, Don Larson Chevrolet Buick Gmc is a very small system (500 people or fewer). Sauk County has 199 active public water systems. Its population served is well below the county average of 342 people per system, and accounts for less than 0.1% of the 68,062 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 Don Larson Chevrolet Buick Gmc 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 Don Larson Chevrolet Buick Gmc?
EPA lists Don Larson Chevrolet Buick Gmc 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. 154 of the 199 active systems in Sauk County (77%) are also privately owned.
Does Don Larson Chevrolet Buick Gmc 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 2011. The violations listed here began between January 2011 and January 2011. By type: 12 monitoring and reporting. The contaminants or rules involved are Styrene, cis-1,2-Dichloroethylene, Xylenes, Total and Dichloromethane. 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 |
|---|---|---|---|---|
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | cis-1,2-Dichloroethylenecode 2380 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dichloromethanecode 2964 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | o-Dichlorobenzenecode 2968 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | p-Dichlorobenzenecode 2969 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Vinyl chloridecode 2976 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlorobenzenecode 2989 | No | Resolved |
| 2011-01-01 | 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.
Don Larson Chevrolet Buick Gmc: frequently asked questions
Who runs Don Larson Chevrolet Buick Gmc?
Don Larson Chevrolet Buick Gmc (PWSID WI1571087) is a non-transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Don Larson Chevrolet Buick Gmc serve?
Don Larson Chevrolet Buick Gmc reports serving 60 people through 1 service connection in Sauk County, Wisconsin.
Where does Don Larson Chevrolet Buick Gmc 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 Don Larson Chevrolet Buick Gmc 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 2011. 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 Don Larson Chevrolet Buick Gmc'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 2011. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Don Larson Chevrolet Buick Gmc's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Don Larson Chevrolet Buick Gmc 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 Sauk County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Baraboo Waterworks | Sauk | 12,703 | Community | Groundwater |
| Reedsburg Waterworks | Sauk | 9,984 | Community | Groundwater |
| Ho Chunk Casino | Sauk | 5,486 | Non-transient non-community | Groundwater |
| Prairie Du Sac Waterworks | Sauk | 4,006 | Community | Groundwater |
| Sauk City Waterworks | Sauk | 3,518 | Community | Groundwater |
| Lake Delton Waterworks | Sauk | 2,914 | 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, “Don Larson Chevrolet Buick Gmc, PWSID WI1571087, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/don-larson-chevrolet-buick-gmc-wi1571087 (data as of October 1, 2026).