Public water system · WI6120250

Active

Prairie Du Chien Waterworks

At a glance

Prairie Du Chien Waterworks (PWSID WI6120250) is an active community water system in Crawford County, Wisconsin. It reports serving 6,005 people through 2,224 service connections. Its primary water source is groundwater, 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 January 2013.

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

Population served

6,005

Service connections

2,224

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDWI6120250

System typeCommunity water system

Activity statusActive

Population served6,005

Service connections2,224

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencyWI state drinking water program

City servedPrairie Du Chien

StateWisconsin

ZIP—

CountyCrawford County

How does Prairie Du Chien Waterworks compare with other water systems in Crawford County?

By EPA's size categories, Prairie Du Chien Waterworks is a medium system (3,301 to 10,000 people). Crawford County has 51 active public water systems, and Prairie Du Chien Waterworks is the largest of them by population served. Its population served is about 24 times the county average of 253 people per system, and accounts for 47% of the 12,910 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 Prairie Du Chien Waterworks is about 10% 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 Prairie Du Chien Waterworks?

EPA lists Prairie Du Chien 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. 9 of the 51 active systems in Crawford County (18%) are also owned by a local government.

Does Prairie Du Chien 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 January 2013. The violations listed here began between January 2009 and January 2013. By type: 10 monitoring and reporting, 1 required treatment not met and 1 public notice, recordkeeping or other. The contaminants or rules involved are Groundwater Rule, Public Notice, 1,1,1-Trichloroethane and Trichloroethylene. EPA lists 12 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
2013-01-01	Required treatment not metFailure To Address Deficiency · code 45	Groundwater Rulecode 0700	Yes	Resolved
2009-04-01	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2009-01-01	Monitoring and reportingMonitoring, Regular · code 03	1,1,1-Trichloroethanecode 2981	No	Resolved
2009-01-01	Monitoring and reportingMonitoring, Regular · code 03	Trichloroethylenecode 2984	No	Resolved
2009-01-01	Monitoring and reportingMonitoring, Regular · code 03	Xylenes, Totalcode 2955	No	Resolved
2009-01-01	Monitoring and reportingMonitoring, Regular · code 03	Dichloromethanecode 2964	No	Resolved
2009-01-01	Monitoring and reportingMonitoring, Regular · code 03	1,2-Dichloroethanecode 2980	No	Resolved
2009-01-01	Monitoring and reportingMonitoring, Regular · code 03	1,2-Dichloropropanecode 2983	No	Resolved
2009-01-01	Monitoring and reportingMonitoring, Regular · code 03	Styrenecode 2996	No	Resolved
2009-01-01	Monitoring and reportingMonitoring, Regular · code 03	Ethylbenzenecode 2992	No	Resolved
2009-01-01	Monitoring and reportingMonitoring, Regular · code 03	p-Dichlorobenzenecode 2969	No	Resolved
2009-01-01	Monitoring and reportingMonitoring, Regular · code 03	1,1-Dichloroethylenecode 2977	No	Resolved

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.

Prairie Du Chien Waterworks: frequently asked questions

Who runs Prairie Du Chien Waterworks?

Prairie Du Chien Waterworks (PWSID WI6120250) is a community water system owned by a local government. It is regulated by the WI state drinking water program.

How many people does Prairie Du Chien Waterworks serve?

Prairie Du Chien Waterworks reports serving 6,005 people through 2,224 service connections in Crawford County, Wisconsin.

Where does Prairie Du Chien 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 Prairie Du Chien 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 January 2013. 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 Prairie Du Chien 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 January 2013. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.

Where can I find Prairie Du Chien Waterworks' water quality report?

As a community water system, Prairie Du Chien 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 Crawford County

Water system	County	Population served	Type	Source
Wauzeka Waterworks	Crawford	711	Community	Groundwater
Soldiers Grove Waterworks	Crawford	592	Community	Groundwater
North Crawford School	Crawford	525	Non-transient non-community	Groundwater
Gays Mills Waterworks	Crawford	490	Community	Groundwater
Sunrise Orchards	Crawford	415	Transient non-community	Groundwater
Eastman Waterworks	Crawford	342	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, “Prairie Du Chien Waterworks, PWSID WI6120250, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/prairie-du-chien-waterworks-wi6120250 (data as of October 1, 2026).