Public water system · WI4050466

Active

Greenleaf Waterworks

At a glance

Greenleaf Waterworks (PWSID WI4050466) is an active community water system in Brown County, Wisconsin. It reports serving 650 people through 240 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 9 violations for this system; 2 are health-based, and the most recent began in July 2010.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

650

Service connections

240

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDWI4050466

System typeCommunity water system

Activity statusActive

Population served650

Service connections240

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencyWI state drinking water program

City servedGreenleaf

StateWisconsin

ZIP—

CountyBrown County

How does Greenleaf Waterworks compare with other water systems in Brown County?

By EPA's size categories, Greenleaf Waterworks is a small system (501 to 3,300 people). Brown County has 148 active public water systems. Its population served is about 61% below the county average of 1,666 people per system, and accounts for 0.3% 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 Greenleaf 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 Greenleaf Waterworks?

EPA lists Greenleaf 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. 41 of the 148 active systems in Brown County (28%) are also owned by a local government.

Does Greenleaf Waterworks have drinking water violations?

EPA's records list 9 violations for this system; 2 are health-based, and the most recent began in July 2010. The violations listed here began between July 1994 and July 2010. By type: 5 monitoring and reporting, 2 public notice, recordkeeping or other and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (3 of them). EPA lists 9 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
2010-07-02	Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35	Stage 2 Disinfectants and Disinfection Byproducts Rulecode 0600	No	Resolved
2009-11-24	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2009-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Resolved
2009-09-08	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2009-07-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Resolved
2009-04-01	Monitoring and reportingMonitoring, Routine (IDSE) · code 30	Total trihalomethanes (TTHM)code 2950	No	Resolved
2009-04-01	Monitoring and reportingMonitoring, Routine (IDSE) · code 30	Haloacetic acids (HAA5)code 2456	No	Resolved
1995-10-01	Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24	Total coliform bacteria (TCR)code 3100	No	Resolved
1994-07-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Resolved

All 9 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.

Greenleaf Waterworks: frequently asked questions

Who runs Greenleaf Waterworks?

Greenleaf Waterworks (PWSID WI4050466) is a community water system owned by a local government. It is regulated by the WI state drinking water program.

How many people does Greenleaf Waterworks serve?

Greenleaf Waterworks reports serving 650 people through 240 service connections in Brown County, Wisconsin.

Where does Greenleaf 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 Greenleaf Waterworks have any drinking water violations?

EPA's records list 9 violations for this system; 2 are health-based, and the most recent began in July 2010. 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 Greenleaf 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 9 violations for this system; 2 are health-based, and the most recent began in July 2010. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.

Where can I find Greenleaf Waterworks' water quality report?

As a community water system, Greenleaf 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 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, “Greenleaf Waterworks, PWSID WI4050466, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/greenleaf-waterworks-wi4050466 (data as of October 1, 2026).