Is SHANNON required to publish a Consumer Confidence Report?

Yes. SHANNON 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 SHANNON’s next Consumer Confidence Report due?

SHANNON’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.

SHANNON, IL · Carroll County

SHANNON Water System

Consumer Confidence Report status

SHANNON 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 SHANNON.

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): IL0150300
System type: Community Water System
Population served: 801
Service connections: 390
Ownership: local government
Water source: groundwater (wells)

SHANNON is one of 773 community water systems in Illinois in the 501 to 3,300 people size category, serving 801 people from groundwater.

As of August 1, 2026, its federal record holds 14 entries between 1977 and 2019, all of which EPA lists as closed. Nothing has been added since 2019.

Of the 14, 3 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 Radionuclides and Revised Rad Rule, inorganic chemicals, and the Total Coliform Rules.

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2019 – December 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2019 – June 30, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
July 1, 2017 – September 30, 2017
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2017 – June 30, 2017
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2016 – March 31, 2016
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
September 1, 2002 – September 30, 2002
Archived
Maximum Contaminant Level Violation, Average
Health-based
Nitrate
January 1, 1995 – March 31, 1995
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Nitrate
April 1, 1994 – June 30, 1994
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Nitrate
January 1, 1994 – March 31, 1994
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Nitrate
October 1, 1993 – December 31, 1993
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 1993 – September 30, 1993
Archived
Maximum Contaminant Level Violation, Average
Health-based
Barium
November 1, 1984 – June 17, 1986
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Barium
November 1, 1981 – October 31, 1984
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
October 1, 2019 – December 31, 2019	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 2019 – June 30, 2019	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 2017 – September 30, 2017	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved
April 1, 2017 – June 30, 2017	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2016 – March 31, 2016	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
September 1, 2002 – September 30, 2002	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
January 1, 1995 – March 31, 1995	Maximum Contaminant Level Violation, Average	Nitrate	Health-based	Resolved
April 1, 1994 – June 30, 1994	Maximum Contaminant Level Violation, Average	Nitrate	Health-based	Resolved
January 1, 1994 – March 31, 1994	Maximum Contaminant Level Violation, Average	Nitrate	Health-based	Resolved
October 1, 1993 – December 31, 1993	Maximum Contaminant Level Violation, Average	Nitrate	Health-based	Resolved
September 1, 1993 – September 30, 1993	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
November 1, 1984 – June 17, 1986	Maximum Contaminant Level Violation, Average	Barium	Health-based	Resolved
November 1, 1981 – October 31, 1984	Maximum Contaminant Level Violation, Average	Barium	Health-based	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

June 26, 2024State Public Notification received1 linked violation
December 7, 2023State Public Notification requested1 linked violation
December 7, 2023State Violation/Reminder Notice1 linked violation
December 1, 2023State Compliance achieved1 linked violation
January 24, 2023State Violation/Reminder Notice1 linked violation
October 5, 2022State Compliance achieved1 linked violation
August 1, 2022State Compliance achieved1 linked violation
July 18, 2022State Violation/Reminder Notice1 linked violation
January 20, 2021State Compliance achieved1 linked violation
January 6, 2021State Violation/Reminder Notice1 linked violation
August 20, 2020State Public Notification received1 linked violation
August 20, 2020State Public Notification received1 linked violation
July 24, 2020State Public Notification requested1 linked violation
July 24, 2020State Violation/Reminder Notice1 linked violation
July 24, 2020State Public Notification requested1 linked violation
July 24, 2020State Violation/Reminder Notice4 linked violations
June 29, 2020State Compliance achieved26 linked violations
May 12, 2020State Public Notification received3 linked violations
May 12, 2020State Public Notification received1 linked violation
April 17, 2020State Public Notification requested1 linked violation
April 17, 2020State Public Notification requested1 linked violation
April 17, 2020State Violation/Reminder Notice1 linked violation
April 17, 2020State Violation/Reminder Notice1 linked violation
February 5, 2020State Public Notification received1 linked violation
February 5, 2020State Public Notification received1 linked violation
January 29, 2020State Formal Notice of Violation issued5 linked violations
January 15, 2020State Public Notification requested1 linked violation
January 15, 2020State Public Notification requested1 linked violation
January 15, 2020State Violation/Reminder Notice1 linked violation
January 15, 2020State Violation/Reminder Notice1 linked violation
November 22, 2019State Public Notification received1 linked violation
October 15, 2019State Public Notification requested1 linked violation
October 15, 2019State Violation/Reminder Notice1 linked violation
September 13, 2019State Administrative/Compliance Order without penalty issued24 linked violations
August 15, 2019State Public Notification received1 linked violation
July 16, 2019State Violation/Reminder Notice1 linked violation
July 16, 2019State Public Notification requested1 linked violation
May 28, 2019State Public Notification received1 linked violation
April 12, 2019State Violation/Reminder Notice1 linked violation
April 12, 2019State Public Notification requested1 linked violation
March 29, 2019State Public Notification received1 linked violation
January 15, 2019State Violation/Reminder Notice1 linked violation
January 15, 2019State Public Notification requested1 linked violation
November 2, 2018State Public Notification received1 linked violation
October 16, 2018State Violation/Reminder Notice1 linked violation
October 16, 2018State Public Notification requested1 linked violation
August 17, 2018State Public Notification received1 linked violation
July 17, 2018State Public Notification requested1 linked violation
July 17, 2018State Violation/Reminder Notice1 linked violation
May 11, 2018State Administrative/Compliance Order without penalty issued23 linked violations
May 10, 2018State Public Notification received1 linked violation
April 13, 2018State Violation/Reminder Notice1 linked violation
April 13, 2018State Public Notification requested1 linked violation
February 1, 2018State Public Notification received1 linked violation
January 18, 2018State Public Notification requested1 linked violation
January 18, 2018State Violation/Reminder Notice1 linked violation
October 31, 2017State Public Notification received1 linked violation
October 31, 2017State Public Notification received1 linked violation
October 13, 2017State Violation/Reminder Notice1 linked violation
October 13, 2017State Public Notification requested1 linked violation
October 13, 2017State Violation/Reminder Notice1 linked violation
October 13, 2017State Public Notification requested1 linked violation
August 3, 2017State Public Notification received1 linked violation
August 3, 2017State Public Notification received1 linked violation
August 2, 2017State Formal Notice of Violation issued2 linked violations
July 14, 2017State Public Notification requested1 linked violation
July 14, 2017State Violation/Reminder Notice1 linked violation
July 14, 2017State Public Notification requested1 linked violation
July 14, 2017State Violation/Reminder Notice1 linked violation
April 27, 2017State Public Notification received1 linked violation
April 13, 2017State Public Notification requested1 linked violation
April 13, 2017State Violation/Reminder Notice1 linked violation
January 13, 2017State Public Notification requested1 linked violation
January 13, 2017State Violation/Reminder Notice1 linked violation
January 11, 2017State Public Notification received1 linked violation
December 19, 2016State Administrative/Compliance Order without penalty issued22 linked violations
December 19, 2016Federal Final Administrative Order issued6 linked violations
November 21, 2016State Public Notification received1 linked violation
October 13, 2016State Public Notification requested1 linked violation
October 13, 2016State Violation/Reminder Notice1 linked violation
September 13, 2016State Public Notification received1 linked violation
July 19, 2016State Public Notification requested1 linked violation
July 19, 2016State Violation/Reminder Notice1 linked violation
June 9, 2016State Public Notification received1 linked violation
April 13, 2016State Public Notification requested1 linked violation
April 13, 2016State Violation/Reminder Notice1 linked violation
January 19, 2016State Public Notification received1 linked violation
January 14, 2016State Violation/Reminder Notice1 linked violation
December 9, 2015State Bilateral Compliance Agreement signed22 linked violations
October 20, 2015State Public Notification requested1 linked violation
October 20, 2015State Violation/Reminder Notice1 linked violation
August 27, 2015State Public Notification received1 linked violation
August 4, 2015State Formal Notice of Violation issued22 linked violations
July 17, 2015State Violation/Reminder Notice1 linked violation
July 17, 2015State Public Notification requested1 linked violation
December 31, 1995State Compliance achieved1 linked violation
July 21, 1995State Compliance achieved2 linked violations
April 1, 1995State Violation/Reminder Notice1 linked violation
April 1, 1995State Public Notification requested1 linked violation
February 14, 1995State Public Notification received2 linked violations
November 10, 1994State Violation/Reminder Notice1 linked violation
November 10, 1994State Public Notification requested1 linked violation
August 20, 1994State Public Notification requested1 linked violation
August 20, 1994State Violation/Reminder Notice1 linked violation
August 20, 1994State Violation/Reminder Notice1 linked violation
July 11, 1994State Compliance achieved1 linked violation
July 11, 1994State Compliance achieved1 linked violation
July 11, 1994State Compliance achieved3 linked violations
July 1, 1994State Public Notification requested2 linked violations
July 1, 1994State Public Notification requested1 linked violation
July 1, 1994State Violation/Reminder Notice1 linked violation
July 1, 1994State Violation/Reminder Notice2 linked violations
June 7, 1994State Public Notification received1 linked violation
April 1, 1994State Public Notification requested2 linked violations
November 10, 1993State Public Notification requested1 linked violation
November 10, 1993State Public Notification requested1 linked violation
November 10, 1993State Violation/Reminder Notice1 linked violation
November 10, 1993State Violation/Reminder Notice1 linked violation
October 23, 1993State Violation/Reminder Notice1 linked violation
October 23, 1993State Public Notification requested1 linked violation
October 23, 1993State Public Notification requested1 linked violation
October 1, 1993State Public Notification received2 linked violations
October 2, 1988State Violation/Reminder Notice18 linked violations

Common questions

Is SHANNON required to publish a Consumer Confidence Report?: Yes. SHANNON 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 SHANNON’s next Consumer Confidence Report due?: SHANNON’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does SHANNON have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for SHANNON.
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

WILSON, PERRI

815-297-7023

SHANNON, IL 61078