Public water system · 055295015

Active

Cex' Ha Ci

At a glance

Cex' Ha Ci (PWSID 055295015) is an active community water system in Wisconsin. It reports serving 2,002 people through 46 service connections. Its primary water source is groundwater, and EPA lists it as Native American-owned. EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in April 2019.

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

Population served

2,002

Service connections

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSID055295015

System typeCommunity water system

Activity statusActive

Population served2,002

Service connections46

Primary water sourceGroundwater

Owner typeNative American

Primacy agencyEPA Region 05

City served—

StateWisconsin

ZIP—

County—

How does Cex' Ha Ci compare with other water systems in Wisconsin?

By EPA's size categories, Cex' Ha Ci is a small system (501 to 3,300 people). Across Wisconsin, the 11,056 active systems average 469 people each. Nationally, the average active community water system reports serving 6,703 people, so Cex' Ha Ci 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 Cex' Ha Ci?

EPA lists Cex' Ha Ci as Native American-owned. The EPA Region 05 is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act.

Does Cex' Ha Ci have drinking water violations?

EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in April 2019. The violations listed here began between May 1992 and April 2019. By type: 6 monitoring and reporting, 1 reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 4 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
2019-04-01	ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B	Revised Total Coliform Rulecode 8000	No	Resolved
2019-04-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Resolved
2017-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nickelcode 1036	No	Resolved
2017-01-01	Monitoring and reportingMonitoring, Regular · code 03	Thalliumcode 1085	No	Resolved
2000-05-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Archived
1994-08-01	Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25	Total coliform bacteria (TCR)code 3100	No	Archived
1994-07-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Archived
1992-05-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Archived

All 8 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.

Cex' Ha Ci: frequently asked questions

Who runs Cex' Ha Ci?

Cex' Ha Ci (PWSID 055295015) is a community water system Native American-owned. It is regulated by the EPA Region 05.

How many people does Cex' Ha Ci serve?

Cex' Ha Ci reports serving 2,002 people through 46 service connections in Wisconsin.

Where does Cex' Ha Ci 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 Cex' Ha Ci have any drinking water violations?

EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in April 2019. 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 Cex' Ha Ci'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 8 violations for this system; 1 is health-based, and the most recent began in April 2019. For current results, consult the system's annual water quality report, EPA ECHO, or the EPA Region 05.

Where can I find Cex' Ha Ci's water quality report?

As a community water system, Cex' Ha Ci 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 Wisconsin

Water system	County	Population served	Type	Source
Milwaukee Waterworks	Milwaukee	626,000	Community	Surface water
Madison Water Utility	Dane	272,000	Community	Groundwater
Green Bay Waterworks	Brown	107,369	Community	Surface water
Racine Waterworks	Racine	105,100	Community	Surface water
Kenosha Water Utility	Kenosha	99,218	Community	Surface water
Appleton Waterworks	Outagamie	74,511	Community	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, “Cex' Ha Ci, PWSID 055295015, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/cex-ha-ci-055295015 (data as of October 1, 2026).