Public water system · WI4052639
ActiveHobart Waterworks S A 4
At a glance
Hobart Waterworks S A 4 (PWSID WI4052639) is an active community water system in Brown County, Wisconsin. It reports serving 53 people through 19 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 2 violations for this system; none is health-based, and the most recent began in April 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
53
Service connections
19
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Hobart Waterworks S A 4 compare with other water systems in Brown County?
By EPA's size categories, Hobart Waterworks S A 4 is a very small system (500 people or fewer). Brown County has 148 active public water systems. Its population served is well below the county average of 1,666 people per system, and accounts for less than 0.1% of the 246,537 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 Hobart Waterworks S A 4 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 43 Wisconsin systems (0.4%) list purchased surface water as their primary source.
Who owns and regulates Hobart Waterworks S A 4?
EPA lists Hobart Waterworks S A 4 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. 41 of the 148 active systems in Brown County (28%) are also owned by a local government.
Does Hobart Waterworks S A 4 have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in April 2025. The violations listed here began between October 2024 and April 2025. By type: 1 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminants or rules involved are Chlorine and Consumer Confidence Rule. EPA lists 1 as archived and 1 as resolved. 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. 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 |
|---|---|---|---|---|
| 2025-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Archived |
| 2024-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
All 2 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.
Hobart Waterworks S A 4: frequently asked questions
Who runs Hobart Waterworks S A 4?
Hobart Waterworks S A 4 (PWSID WI4052639) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Hobart Waterworks S A 4 serve?
Hobart Waterworks S A 4 reports serving 53 people through 19 service connections in Brown County, Wisconsin.
Where does Hobart Waterworks S A 4 get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Hobart Waterworks S A 4 have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in April 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 Hobart Waterworks S A 4'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 2 violations for this system; none is health-based, and the most recent began in April 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 Hobart Waterworks S A 4's water quality report?
As a community water system, Hobart Waterworks S A 4 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 Brown County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Green Bay Waterworks | Brown | 107,369 | Community | Surface water |
| De Pere Waterworks Sa 1 | Brown | 25,660 | Community | Purchased surface water |
| Howard Waterworks | Brown | 21,133 | Community | Purchased surface water |
| Ashwaubenon Waterworks | Brown | 17,730 | Community | Purchased surface water |
| Bellevue Waterworks | Brown | 16,715 | Community | Purchased surface water |
| Allouez Waterworks | Brown | 13,923 | Community | Purchased 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, “Hobart Waterworks S A 4, PWSID WI4052639, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/hobart-waterworks-s-a-4-wi4052639 (data as of October 1, 2026).