Public water system · WI4080222
ActiveChilton Waterworks
At a glance
Chilton Waterworks (PWSID WI4080222) is an active community water system in Calumet County, Wisconsin. It reports serving 4,191 people through 1,732 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 October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,191
Service connections
1,732
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Chilton Waterworks compare with other water systems in Calumet County?
By EPA's size categories, Chilton Waterworks is a medium system (3,301 to 10,000 people). Calumet County has 50 active public water systems, and Chilton Waterworks is the 2nd-largest of them by population served. Its population served is about 8.6 times the county average of 485 people per system, and accounts for 17% of the 24,253 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 Chilton Waterworks is about 37% 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 Chilton Waterworks?
EPA lists Chilton 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. 12 of the 50 active systems in Calumet County (24%) are also owned by a local government.
Does Chilton Waterworks have drinking water violations?
EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in October 2024. The violations listed here began between January 1994 and October 2024. By type: 4 public notice, recordkeeping or other and 2 required treatment not met. The contaminant or rule involved most often is Consumer Confidence Rule (3 of them). EPA lists 6 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 |
|---|---|---|---|---|
| 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 | Resolved |
| 2011-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2011-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2010-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1994-01-01 | Required treatment not metPublic Education · code 65 | Lead and Copper Rulecode 5000 | Yes | 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.
Chilton Waterworks: frequently asked questions
Who runs Chilton Waterworks?
Chilton Waterworks (PWSID WI4080222) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Chilton Waterworks serve?
Chilton Waterworks reports serving 4,191 people through 1,732 service connections in Calumet County, Wisconsin.
Where does Chilton 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 Chilton Waterworks have any drinking water violations?
EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in October 2024. 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 Chilton 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; 2 are health-based, and the most recent began in October 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Chilton Waterworks' water quality report?
As a community water system, Chilton 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 Calumet County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Harrison Utilities - Fka Waverly Sd | Calumet | 5,500 | Community | Purchased surface water |
| Brillion Waterworks | Calumet | 3,262 | Community | Groundwater |
| Sherwood Waterworks | Calumet | 3,114 | Community | Purchased surface water |
| New Holstein Waterworks | Calumet | 3,012 | Community | Groundwater |
| Hilbert Waterworks | Calumet | 1,176 | Community | Groundwater |
| Stockbridge Waterworks | Calumet | 650 | 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, “Chilton Waterworks, PWSID WI4080222, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/chilton-waterworks-wi4080222 (data as of October 1, 2026).