Public water system · WI8580533
ActiveRadisson Waterworks
At a glance
Radisson Waterworks (PWSID WI8580533) is an active community water system in Sawyer County, Wisconsin. It reports serving 241 people through 89 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 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
241
Service connections
89
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Radisson Waterworks compare with other water systems in Sawyer County?
By EPA's size categories, Radisson Waterworks is a very small system (500 people or fewer). Sawyer County has 191 active public water systems. Its population served is about 3.4 times the county average of 70 people per system, and accounts for 1.8% of the 13,417 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 Radisson 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 Radisson Waterworks?
EPA lists Radisson 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. 8 of the 191 active systems in Sawyer County (4.2%) are also owned by a local government.
Does Radisson 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 January 2026. The violations listed here began between October 2023 and January 2026. By type: 4 monitoring and reporting, 4 public notice, recordkeeping or other, 2 monitoring, 1 reporting and 1 required treatment not met. The contaminant or rule involved most often is Public Notice (4 of them). EPA lists 9 as resolved and 3 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 |
|---|---|---|---|---|
| 2026-01-30 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2025-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2025-01-07 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2025-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2024-12-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2024-11-22 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2024-11-22 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2024-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2024-10-17 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2023-10-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | 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.
Radisson Waterworks: frequently asked questions
Who runs Radisson Waterworks?
Radisson Waterworks (PWSID WI8580533) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Radisson Waterworks serve?
Radisson Waterworks reports serving 241 people through 89 service connections in Sawyer County, Wisconsin.
Where does Radisson 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 Radisson 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 January 2026. 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 Radisson 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 January 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Radisson Waterworks' water quality report?
As a community water system, Radisson 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 Sawyer County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Hayward Water Utility | Sawyer | 2,552 | Community | Groundwater |
| Winter Waterworks | Sawyer | 344 | Community | Groundwater |
| Grand Pines Motel | Sawyer | 300 | Transient non-community | Groundwater |
| Nelson Lake Lodge Office | Sawyer | 300 | Transient non-community | Groundwater |
| Big Bear Lodge | Sawyer | 250 | Transient non-community | Groundwater |
| Dock the | Sawyer | 250 | Transient non-community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Radisson Waterworks, PWSID WI8580533, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/radisson-waterworks-wi8580533 (data as of October 1, 2026).