Public water system · WI8260122
ActivePence Waterworks
At a glance
Pence Waterworks (PWSID WI8260122) is an active community water system in Iron County, Wisconsin. It reports serving 191 people through 102 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in September 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
191
Service connections
102
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Pence Waterworks compare with other water systems in Iron County?
By EPA's size categories, Pence Waterworks is a very small system (500 people or fewer). Iron County has 57 active public water systems, and Pence Waterworks is the 6th-largest of them by population served. Its population served is about 89% above the county average of 101 people per system, and accounts for 3.3% of the 5,745 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 Pence 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. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 15 Wisconsin systems (0.1%) list purchased groundwater as their primary source.
Who owns and regulates Pence Waterworks?
EPA lists Pence 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. 11 of the 57 active systems in Iron County (19%) are also owned by a local government.
Does Pence Waterworks have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in September 2025. The violations listed here began between October 2011 and September 2025. By type: 5 public notice, recordkeeping or other, 5 monitoring and reporting, 1 required treatment not met and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Public Notice (4 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 |
|---|---|---|---|---|
| 2025-09-02 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2018-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2018-05-02 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Resolved |
| 2017-06-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2016-02-08 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Resolved |
| 2015-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2015-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2015-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2011-10-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2011-10-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
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.
Pence Waterworks: frequently asked questions
Who runs Pence Waterworks?
Pence Waterworks (PWSID WI8260122) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Pence Waterworks serve?
Pence Waterworks reports serving 191 people through 102 service connections in Iron County, Wisconsin.
Where does Pence Waterworks get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Pence Waterworks 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 September 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 Pence 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, 2 are health-based, and the most recent began in September 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 Pence Waterworks' water quality report?
As a community water system, Pence 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 Iron County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Hurley Waterworks | Iron | 1,515 | Community | Purchased groundwater |
| Montreal Waterworks | Iron | 887 | Community | Groundwater |
| Mercer Sanitary District | Iron | 760 | Community | Groundwater |
| Iron Belt Waterworks | Iron | 211 | Community | Groundwater |
| Iron County Saxon Harbor Main Well | Iron | 200 | Transient non-community | Groundwater |
| Wi Dnr Sandy Bch Lk Cmpgd 44 | Iron | 140 | 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, “Pence Waterworks, PWSID WI8260122, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/pence-waterworks-wi8260122 (data as of October 1, 2026).