Public water system · WI8040131
ActiveIron River Sanitary District
At a glance
Iron River Sanitary District (PWSID WI8040131) is an active community water system in Bayfield County, Wisconsin. It reports serving 600 people through 222 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 January 2025.
This page covers its drinking water system only; sewer and wastewater service are not part of EPA's drinking water records.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
600
Service connections
222
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Iron River Sanitary District compare with other water systems in Bayfield County?
By EPA's size categories, Iron River Sanitary District is a small system (501 to 3,300 people). Bayfield County has 194 active public water systems, and Iron River Sanitary District is the 2nd-largest of them by population served. Its population served is about 11 times the county average of 55 people per system, and accounts for 5.6% of the 10,732 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 Iron River Sanitary District 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 Iron River Sanitary District?
EPA lists Iron River Sanitary District 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. 28 of the 194 active systems in Bayfield County (14%) are also owned by a local government.
Does Iron River Sanitary District have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in January 2025. The violations listed here began between October 2022 and January 2025. By type: 8 monitoring and reporting, 2 public notice, recordkeeping or other, 1 monitoring and 1 required treatment not met. The contaminant or rule involved most often is Haloacetic acids (HAA5) (4 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 |
|---|---|---|---|---|
| 2025-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2024-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | 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 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2024-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2024-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2024-01-28 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2022-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2022-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | 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.
Iron River Sanitary District: frequently asked questions
Who runs Iron River Sanitary District?
Iron River Sanitary District (PWSID WI8040131) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Iron River Sanitary District serve?
Iron River Sanitary District reports serving 600 people through 222 service connections in Bayfield County, Wisconsin.
Where does Iron River Sanitary District 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 Iron River Sanitary District 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 January 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 Iron River Sanitary District'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, one is health-based, and the most recent began in January 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 Iron River Sanitary District's water quality report?
As a community water system, Iron River Sanitary District 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 Bayfield County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Washburn Waterworks | Bayfield | 2,280 | Community | Groundwater |
| Drummond Sanitary District | Bayfield | 500 | Community | Groundwater |
| Bayfield Waterworks | Bayfield | 488 | Community | Groundwater |
| Port Wing Sanitary District | Bayfield | 400 | Community | Groundwater |
| Mount Ashwabay | Bayfield | 220 | Transient non-community | Groundwater |
| Grace Baptist Church | Bayfield | 102 | Transient non-community | Groundwater |
Related pages
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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, “Iron River Sanitary District, PWSID WI8040131, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/iron-river-sanitary-district-wi8040131 (data as of October 1, 2026).