Public water system · WI6090462
ActiveStanley Waterworks
At a glance
Stanley Waterworks (PWSID WI6090462) is an active community water system in Chippewa County, Wisconsin. It reports serving 3,500 people through 882 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, one is health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,500
Service connections
882
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Stanley Waterworks compare with other water systems in Chippewa County?
By EPA's size categories, Stanley Waterworks is a medium system (3,301 to 10,000 people). Chippewa County has 218 active public water systems, and Stanley Waterworks is the 4th-largest of them by population served. Its population served is about 15 times the county average of 237 people per system, and accounts for 6.8% of the 51,682 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 Stanley Waterworks is about half of 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 Stanley Waterworks?
EPA lists Stanley 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. 23 of the 218 active systems in Chippewa County (11%) are also owned by a local government.
Does Stanley Waterworks have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2025. The violations listed here began between January 2017 and October 2025. By type: 10 monitoring and reporting, 1 monitoring and 1 required treatment not met. The contaminants or rules involved are Bromate, Revised Total Coliform Rule, Groundwater Rule and Lindane (gamma-BHC). 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 |
|---|---|---|---|---|
| 2025-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Bromatecode 1011 | No | Resolved |
| 2025-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-05-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Lindane (gamma-BHC)code 2010 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Pentachlorophenolcode 2326 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4,5-TP (Silvex)code 2110 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Hexachlorobenzenecode 2274 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Simazinecode 2037 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Atrazinecode 2050 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Heptachlor epoxidecode 2067 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4-Dcode 2105 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Picloramcode 2040 | 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.
Stanley Waterworks: frequently asked questions
Who runs Stanley Waterworks?
Stanley Waterworks (PWSID WI6090462) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Stanley Waterworks serve?
Stanley Waterworks reports serving 3,500 people through 882 service connections in Chippewa County, Wisconsin.
Where does Stanley 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 Stanley Waterworks have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2025. 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 Stanley 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, one is health-based, and the most recent began in October 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Stanley Waterworks' water quality report?
As a community water system, Stanley 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 Chippewa County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Chippewa Falls Waterworks | Chippewa | 13,375 | Community | Groundwater |
| Lake Hallie Waterworks Village of | Chippewa | 6,701 | Community | Groundwater |
| Bloomer Waterworks | Chippewa | 3,680 | Community | Groundwater |
| Cornell Waterworks | Chippewa | 1,390 | Community | Groundwater |
| Cadott Waterworks | Chippewa | 1,352 | Community | Groundwater |
| Bateman Express Mart | Chippewa | 800 | 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, “Stanley Waterworks, PWSID WI6090462, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/stanley-waterworks-wi6090462 (data as of October 1, 2026).