Is MOKENA required to publish a Consumer Confidence Report?

Yes. MOKENA is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is MOKENA’s next Consumer Confidence Report due?

MOKENA’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

MOKENA, IL · Will County

MOKENA Water System

Consumer Confidence Report status

MOKENA must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for MOKENA.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Illinois’s official records. Always confirm current status with Illinois before making decisions based on this information.

System facts

System ID (PWSID): IL1970600
System type: Community Water System
Population served: 19,887
Service connections: 7,250
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

MOKENA is one of 225 community water systems in Illinois in the 10,001 to 100,000 people size category, serving 19,887 people from surface water.

As of August 1, 2026, its federal record holds 9 entries between 1977 and 2024, all of which EPA lists as closed.

Of the 9, 6 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Total Coliform Rules, the Stage 2 Disinfectants and Disinfection Byproducts Rule, and the Stage 1 Disinfectants and Disinfection Byproducts Rule.

Violation history

Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2024 – September 30, 2024
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
March 1, 2021 – March 31, 2021
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2021 – March 31, 2021
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2018 – July 30, 2018
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2012 – July 31, 2012
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 1996 – June 30, 1996
Archived
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
June 1, 1996 – June 30, 1996
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
June 30, 1977 – June 29, 1981
Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2024 – September 30, 2024	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring and Reporting (DBP)	TTHM	—	Resolved
March 1, 2021 – March 31, 2021	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2021 – March 31, 2021	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2018 – July 30, 2018	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2012 – July 31, 2012	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 1996 – June 30, 1996	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
June 1, 1996 – June 30, 1996	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Archived
June 30, 1977 – June 29, 1981	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

July 2, 2025State Public Notification received2 linked violations
December 31, 2024State Compliance achieved2 linked violations
October 15, 2024State Public Notification requested2 linked violations
October 15, 2024State Violation/Reminder Notice2 linked violations
November 16, 2021State Public Notification received1 linked violation
November 16, 2021State Public Notification received1 linked violation
April 16, 2021State Compliance achieved2 linked violations
April 13, 2021State Violation/Reminder Notice1 linked violation
April 13, 2021State Public Notification requested1 linked violation
April 13, 2021State Violation/Reminder Notice1 linked violation
April 13, 2021State Public Notification requested1 linked violation
July 30, 2018State Compliance achieved1 linked violation
July 25, 2018State Violation/Reminder Notice1 linked violation
September 12, 2012State Public Notification received1 linked violation
August 21, 2012State Compliance achieved1 linked violation
August 13, 2012State Violation/Reminder Notice1 linked violation
August 13, 2012State Public Notification requested1 linked violation
September 7, 1996State Violation/Reminder Notice2 linked violations
September 7, 1996State Public Notification requested2 linked violations
August 1, 1996State Public Notification received2 linked violations
January 26, 1994State Compliance achieved1 linked violation
January 16, 1993State Violation/Reminder Notice1 linked violation
January 16, 1993State Public Notification requested1 linked violation
October 18, 1989State Public Notification issuedgeneral compliance action — not tied to a specific violation on record
July 22, 1989State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
November 19, 1988State Public Notification requested1 linked violation

Common questions

Is MOKENA required to publish a Consumer Confidence Report?: Yes. MOKENA is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is MOKENA’s next Consumer Confidence Report due?: MOKENA’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MOKENA have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for MOKENA.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

BERSHERS, TIMOTHY

708-479-3926

MOKENA, IL 60448