Public water system · WI6490332
ActiveCenturia Waterworks
At a glance
Centuria Waterworks (PWSID WI6490332) is an active community water system in Polk County, Wisconsin. It reports serving 900 people through 333 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; none is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
900
Service connections
333
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Centuria Waterworks compare with other water systems in Polk County?
By EPA's size categories, Centuria Waterworks is a small system (501 to 3,300 people). Polk County has 187 active public water systems. Its population served is about 7.4 times the county average of 121 people per system, and accounts for 4% of the 22,690 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 Centuria 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 Centuria Waterworks?
EPA lists Centuria 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. 20 of the 187 active systems in Polk County (11%) are also owned by a local government.
Does Centuria Waterworks have drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in July 2025. The violations listed here began between January 1993 and July 2025. By type: 5 monitoring and reporting and 1 reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 3 as resolved, 2 as archived 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. 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 |
|---|---|---|---|---|
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2015-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2001-09-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1997-04-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1993-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 1993-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
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.
Centuria Waterworks: frequently asked questions
Who runs Centuria Waterworks?
Centuria Waterworks (PWSID WI6490332) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Centuria Waterworks serve?
Centuria Waterworks reports serving 900 people through 333 service connections in Polk County, Wisconsin.
Where does Centuria 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 Centuria Waterworks have any drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in July 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 Centuria 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. EPA's records list 6 violations for this system; none is health-based, and the most recent began in July 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 Centuria Waterworks' water quality report?
As a community water system, Centuria 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 Polk County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Amery Waterworks | Polk | 2,962 | Community | Groundwater |
| Osceola Waterworks | Polk | 2,680 | Community | Groundwater |
| St Croix Falls Waterworks | Polk | 2,079 | Community | Groundwater |
| Frederic Waterworks | Polk | 1,241 | Community | Groundwater |
| Luck Waterworks | Polk | 1,150 | Community | Groundwater |
| Clear Lake Waterworks | Polk | 1,061 | 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, “Centuria Waterworks, PWSID WI6490332, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/centuria-waterworks-wi6490332 (data as of October 1, 2026).