Public water system · WI6630262
ActiveStoddard Waterworks
At a glance
Stoddard Waterworks (PWSID WI6630262) is an active community water system in Vernon County, Wisconsin. It reports serving 793 people through 325 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
793
Service connections
325
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Stoddard Waterworks compare with other water systems in Vernon County?
By EPA's size categories, Stoddard Waterworks is a small system (501 to 3,300 people). Vernon County has 66 active public water systems, and Stoddard Waterworks is the 4th-largest of them by population served. Its population served is about 3.1 times the county average of 255 people per system, and accounts for 4.7% of the 16,796 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 Stoddard Waterworks 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 Stoddard Waterworks?
EPA lists Stoddard Waterworks as owned by a local government. 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. 19 of the 66 active systems in Vernon County (29%) are also owned by a local government.
Does Stoddard Waterworks have drinking water violations?
Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in October 2024. The violations listed here began between November 2001 and October 2024. By type: 5 monitoring and reporting, 3 public notice, recordkeeping or other, 3 required treatment not met and 1 monitoring. The contaminant or rule involved most often is Public Notice (2 of them). EPA lists 11 as resolved and 1 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 |
|---|---|---|---|---|
| 2024-10-17 | 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 |
| 2024-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2021-02-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2018-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-07-02 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2018-07-02 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2009-01-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2008-12-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2008-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2004-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2001-11-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | 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.
Stoddard Waterworks: frequently asked questions
Who runs Stoddard Waterworks?
Stoddard Waterworks (PWSID WI6630262) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Stoddard Waterworks serve?
Stoddard Waterworks reports serving 793 people through 325 service connections in Vernon County, Wisconsin.
Where does Stoddard Waterworks 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 Stoddard Waterworks have any drinking water violations?
Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in October 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 Stoddard Waterworks' 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, 3 are health-based, and the most recent began in October 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 Stoddard Waterworks' water quality report?
As a community water system, Stoddard Waterworks 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 Vernon County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Viroqua Waterworks | Vernon | 4,362 | Community | Groundwater |
| Westby Waterworks | Vernon | 2,400 | Community | Groundwater |
| Hillsboro Waterworks | Vernon | 1,325 | Community | Groundwater |
| Coon Valley Waterworks | Vernon | 765 | Community | Groundwater |
| La Farge Waterworks | Vernon | 712 | Community | Groundwater |
| Viola Waterworks | Vernon | 667 | 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, “Stoddard Waterworks, PWSID WI6630262, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/stoddard-waterworks-wi6630262 (data as of October 1, 2026).