Public water system · WI2670116
ActiveSlinger Water Utility
At a glance
Slinger Water Utility (PWSID WI2670116) is an active community water system in Washington County, Wisconsin. It reports serving 5,659 people through 2,095 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
5,659
Service connections
2,095
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Slinger Water Utility compare with other water systems in Washington County?
By EPA's size categories, Slinger Water Utility is a medium system (3,301 to 10,000 people). Washington County has 268 active public water systems, and Slinger Water Utility is the 5th-largest of them by population served. Its population served is about 11 times the county average of 496 people per system, and accounts for 4.3% of the 132,959 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 Slinger Water Utility is about 16% 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 Slinger Water Utility?
EPA lists Slinger Water Utility 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. 38 of the 268 active systems in Washington County (14%) are also owned by a local government.
Does Slinger Water Utility have drinking water violations?
EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in October 2024. The violations listed here began between May 1992 and October 2024. By type: 6 monitoring and reporting, 2 public notice, recordkeeping or other, 1 required treatment not met and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). EPA lists 8 as resolved, 1 as unaddressed and 1 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| 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 |
| 2011-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2007-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2006-12-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2006-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1999-09-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1996-02-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-01-01 | Monitoring and reportingInitial, Follow-up, or Routine Source Water M/R · code 56 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1992-05-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 10 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.
Slinger Water Utility: frequently asked questions
Who runs Slinger Water Utility?
Slinger Water Utility (PWSID WI2670116) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Slinger Water Utility serve?
Slinger Water Utility reports serving 5,659 people through 2,095 service connections in Washington County, Wisconsin.
Where does Slinger Water Utility 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 Slinger Water Utility have any drinking water violations?
EPA's records list 10 violations for this system; 2 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 Slinger Water Utility'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. EPA's records list 10 violations for this system; 2 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 Slinger Water Utility's water quality report?
As a community water system, Slinger Water Utility 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 Washington County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| West Bend Waterworks | Washington | 31,752 | Community | Groundwater |
| Germantown Water Utility | Washington | 20,027 | Community | Groundwater |
| Hartford Waterworks | Washington | 15,805 | Community | Groundwater |
| Jackson Waterworks | Washington | 7,844 | Community | Groundwater |
| Kewaskum Waterworks | Washington | 4,309 | Community | Groundwater |
| Cabelas - Richfield | Washington | 3,931 | Non-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, “Slinger Water Utility, PWSID WI2670116, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/slinger-water-utility-wi2670116 (data as of October 1, 2026).