Public water system · WI4450333
ActiveAppleton Waterworks
At a glance
Appleton Waterworks (PWSID WI4450333) is an active community water system in Outagamie County, Wisconsin. It reports serving 74,511 people through 25,221 service connections. Its primary water source is surface water, 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 July 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
74,511
Service connections
25,221
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Appleton Waterworks compare with other water systems in Outagamie County?
By EPA's size categories, Appleton Waterworks is a large system (10,001 to 100,000 people). Outagamie County has 107 active public water systems, and Appleton Waterworks is the largest of them by population served. Its population served is about 44 times the county average of 1,679 people per system, and accounts for 41% of the 179,613 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 Appleton Waterworks is about 11 times 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 20 Wisconsin systems (0.2%) list surface water as their primary source.
Who owns and regulates Appleton Waterworks?
EPA lists Appleton 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. 21 of the 107 active systems in Outagamie County (20%) are also owned by a local government.
Does Appleton 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 July 2023. The violations listed here began between January 1998 and July 2023. By type: 8 monitoring and reporting, 3 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Consumer Confidence Rule (2 of them). EPA lists 8 as resolved and 4 as archived. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2023-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2023-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2008-05-27 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2008-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Di(2-ethylhexyl) phthalatecode 2039 | Yes | Resolved |
| 2006-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2006-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Methoxychlorcode 2015 | No | Archived |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Simazinecode 2037 | No | Archived |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endothallcode 2033 | No | Resolved |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toxaphenecode 2020 | No | Archived |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Aldicarb sulfonecode 2044 | No | Archived |
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.
Appleton Waterworks: frequently asked questions
Who runs Appleton Waterworks?
Appleton Waterworks (PWSID WI4450333) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Appleton Waterworks serve?
Appleton Waterworks reports serving 74,511 people through 25,221 service connections in Outagamie County, Wisconsin.
Where does Appleton Waterworks get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Appleton 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 July 2023. 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 Appleton 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 July 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Appleton Waterworks' water quality report?
As a community water system, Appleton 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 Outagamie County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Grand Chute Tn San Dist 1 | Outagamie | 21,583 | Community | Purchased surface water |
| Kaukauna Utilities | Outagamie | 17,493 | Community | Groundwater |
| Darboy Sanitary Dist 1 | Outagamie | 13,024 | Community | Groundwater |
| Little Chute Waterworks | Outagamie | 12,168 | Community | Groundwater |
| Greenville Utilities Vil of | Outagamie | 11,340 | Community | Groundwater |
| Kimberly Waterworks | Outagamie | 7,608 | 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, “Appleton Waterworks, PWSID WI4450333, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/appleton-waterworks-wi4450333 (data as of October 1, 2026).