Is ILLIOPOLIS required to publish a Consumer Confidence Report?

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

ILLIOPOLIS’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.

ILLIOPOLIS, IL · Sangamon County

ILLIOPOLIS Water System

Consumer Confidence Report status

ILLIOPOLIS 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 ILLIOPOLIS.

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): IL1670550
System type: Community Water System
Population served: 1,037
Service connections: 445
Ownership: local government
Water source: groundwater (wells)

ILLIOPOLIS is one of 773 community water systems in Illinois in the 501 to 3,300 people size category, serving 1,037 people from groundwater.

As of August 1, 2026, its federal record holds 14 entries between 1977 and 2025, all of which EPA lists as closed.

Of the 14, 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 Stage 2 Disinfectants and Disinfection Byproducts Rule, the Consumer Confidence Rule, and the Stage 1 Disinfectants and Disinfection Byproducts Rule.

Violation history

Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2025 – June 30, 2025
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2025 – June 30, 2025
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2024 – September 30, 2024
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2023 – March 7, 2024
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2023 – April 10, 2024
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2022 – June 30, 2022
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2022 – March 31, 2022
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2021 – December 31, 2021
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2021 – September 30, 2021
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2020 – March 10, 2020
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
October 14, 2006 – October 20, 2006
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2006 – September 30, 2006
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
September 20, 2004 – October 14, 2004
Resolved
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
April 1, 2025 – June 30, 2025	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring and Reporting (DBP)	TTHM	—	Resolved
October 1, 2023 – March 7, 2024	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 2023 – April 10, 2024	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
April 1, 2022 – June 30, 2022	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2022 – March 31, 2022	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2021 – December 31, 2021	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2021 – September 30, 2021	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2020 – March 10, 2020	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
October 14, 2006 – October 20, 2006	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2006 – September 30, 2006	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
September 20, 2004 – October 14, 2004	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
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

September 14, 2022State Compliance achieved453 linked violations

Common questions

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

REED, RODGER

217-620-6915

ILLIOPOLIS, IL 62539