Public water system · 055295508
ActiveKeshena
At a glance
Keshena (PWSID 055295508) is an active community water system in Wisconsin. It reports serving 3,960 people through 338 service connections. Its primary water source is groundwater, and EPA lists it as Native American-owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,960
Service connections
338
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Keshena compare with other water systems in Wisconsin?
By EPA's size categories, Keshena is a medium system (3,301 to 10,000 people). Across Wisconsin, the 11,056 active systems average 469 people each. Nationally, the average active community water system reports serving 6,703 people, so Keshena is about 41% 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 Keshena?
EPA lists Keshena as Native American-owned. The EPA Region 05 is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act.
Does Keshena have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2019. The violations listed here began between January 2014 and October 2019. By type: 11 monitoring and reporting and 1 reporting. The contaminants or rules involved are Revised Total Coliform Rule, Chlorine, Lead and Copper Rule and E. coli. 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 |
|---|---|---|---|---|
| 2019-10-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2018-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2017-09-14 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2015-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | p-Dichlorobenzenecode 2969 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlorobenzenecode 2989 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1-Dichloroethylenecode 2977 | 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.
Keshena: frequently asked questions
Who runs Keshena?
Keshena (PWSID 055295508) is a community water system Native American-owned. It is regulated by the EPA Region 05.
How many people does Keshena serve?
Keshena reports serving 3,960 people through 338 service connections in Wisconsin.
Where does Keshena 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 Keshena have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2019. 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 Keshena'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, none is health-based, and the most recent began in October 2019. For current results, consult the system's annual water quality report, EPA ECHO, or the EPA Region 05.
Where can I find Keshena's water quality report?
As a community water system, Keshena 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 Wisconsin
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Milwaukee Waterworks | Milwaukee | 626,000 | Community | Surface water |
| Madison Water Utility | Dane | 272,000 | Community | Groundwater |
| Green Bay Waterworks | Brown | 107,369 | Community | Surface water |
| Racine Waterworks | Racine | 105,100 | Community | Surface water |
| Kenosha Water Utility | Kenosha | 99,218 | Community | Surface water |
| Appleton Waterworks | Outagamie | 74,511 | Community | Surface water |
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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, “Keshena, PWSID 055295508, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/keshena-055295508 (data as of October 1, 2026).