Public water system · WI1130232
ActiveLake Forest Water Coop
At a glance
Lake Forest Water Coop (PWSID WI1130232) is an active community water system in Dane County, Wisconsin. It reports serving 400 people through 94 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in November 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
400
Service connections
94
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Lake Forest Water Coop compare with other water systems in Dane County?
By EPA's size categories, Lake Forest Water Coop is a very small system (500 people or fewer). Dane County has 300 active public water systems. Its population served is well below the county average of 1,742 people per system, and accounts for less than 0.1% of the 522,696 people reported by systems filed under the county. Across Wisconsin, the 11,056 active systems average 469 people each. Nationally, the average active community water system reports serving 6,703 people, so Lake Forest Water Coop is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Wisconsin has 1,053 active community water systems, 9.5% 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 Lake Forest Water Coop?
EPA lists Lake Forest Water 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. 211 of the 300 active systems in Dane County (70%) are also privately owned.
Does Lake Forest Water Coop have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in November 2024. The violations listed here began between July 2018 and November 2024. By type: 4 public notice, recordkeeping or other, 4 monitoring and reporting, 2 required treatment not met and 2 reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (2 of them). EPA lists 10 as resolved and 2 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-11-17 | Required treatment not metTreatment Technique, Level 1 Assessment (RTCR) · code 2A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2024-11-17 | ReportingReporting, Assessment Forms (RTCR) · code 4A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-10-17 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2024-10-17 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2024-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2024-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2018-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | o-Dichlorobenzenecode 2968 | No | Resolved |
| 2018-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlorobenzenecode 2989 | No | Resolved |
| 2018-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toluenecode 2991 | No | Resolved |
| 2018-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | 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.
Lake Forest Water Coop: frequently asked questions
Who runs Lake Forest Water Coop?
Lake Forest Water Coop (PWSID WI1130232) is a community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Lake Forest Water Coop serve?
Lake Forest Water Coop reports serving 400 people through 94 service connections in Dane County, Wisconsin.
Where does Lake Forest Water 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 Lake Forest Water Coop have any drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in November 2024. 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 Lake Forest Water 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, 2 are health-based, and the most recent began in November 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Lake Forest Water Coop's water quality report?
As a community water system, Lake Forest Water Coop must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Dane County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Madison Water Utility | Dane | 272,000 | Community | Groundwater |
| Sun Prairie Utilities | Dane | 39,300 | Community | Groundwater |
| Fitchburg Utility Dist 1 | Dane | 24,500 | Community | Groundwater |
| Middleton Waterworks | Dane | 23,868 | Community | Groundwater |
| Waunakee Waterworks | Dane | 14,879 | Community | Groundwater |
| Verona Waterworks | Dane | 14,030 | 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, “Lake Forest Water Coop, PWSID WI1130232, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/lake-forest-water-coop-wi1130232 (data as of October 1, 2026).