Public water system · WI4590457
ActiveShawano Lk San Dist 1
At a glance
Shawano Lk San Dist 1 (PWSID WI4590457) is an active community water system in Shawano County, Wisconsin. It reports serving 4,950 people through 1,833 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in June 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,950
Service connections
1,833
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Shawano Lk San Dist 1 compare with other water systems in Shawano County?
By EPA's size categories, Shawano Lk San Dist 1 is a medium system (3,301 to 10,000 people). Shawano County has 116 active public water systems, and Shawano Lk San Dist 1 is the 2nd-largest of them by population served. Its population served is about 24 times the county average of 210 people per system, and accounts for 20% of the 24,399 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 Shawano Lk San Dist 1 is about 26% 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 Shawano Lk San Dist 1?
EPA lists Shawano Lk San Dist 1 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. 16 of the 116 active systems in Shawano County (14%) are also owned by a local government.
Does Shawano Lk San Dist 1 have drinking water violations?
EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in June 2019. The violations listed here began between May 1993 and June 2019. By type: 3 monitoring and reporting, 1 required treatment not met, 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 5 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 |
|---|---|---|---|---|
| 2019-06-01 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2011-11-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2011-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2011-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 1998-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1993-05-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 6 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.
Shawano Lk San Dist 1: frequently asked questions
Who runs Shawano Lk San Dist 1?
Shawano Lk San Dist 1 (PWSID WI4590457) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Shawano Lk San Dist 1 serve?
Shawano Lk San Dist 1 reports serving 4,950 people through 1,833 service connections in Shawano County, Wisconsin.
Where does Shawano Lk San Dist 1 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 Shawano Lk San Dist 1 have any drinking water violations?
EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in June 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 Shawano Lk San Dist 1'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 6 violations for this system; 2 are health-based, and the most recent began in June 2019. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Shawano Lk San Dist 1's water quality report?
As a community water system, Shawano Lk San Dist 1 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 Shawano County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Shawano Waterworks | Shawano | 9,610 | Community | Groundwater |
| Bonduel Waterworks | Shawano | 1,475 | Community | Groundwater |
| Wittenberg Waterworks | Shawano | 1,200 | Community | Groundwater |
| Birnamwood Waterworks | Shawano | 832 | Community | Groundwater |
| Tigerton Waterworks | Shawano | 705 | Community | Groundwater |
| Gresham Waterworks | Shawano | 534 | 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, “Shawano Lk San Dist 1, PWSID WI4590457, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/shawano-lk-san-dist-1-wi4590457 (data as of October 1, 2026).