Is ONEIDA required to publish a Consumer Confidence Report?

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

ONEIDA’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.

ONEIDA, IL · Knox County

ONEIDA Water System

Consumer Confidence Report status

ONEIDA 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 ONEIDA.

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): IL0950400
System type: Community Water System
Population served: 644
Service connections: 280
Ownership: local government
Water source: groundwater (wells)

ONEIDA is one of 773 community water systems in Illinois in the 501 to 3,300 people size category, serving 644 people from groundwater.

As of August 1, 2026, its federal record holds 7 entries between 1977 and 2023, all of which EPA lists as closed. Nothing has been added since 2023.

Of the 7, 4 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 inorganic chemicals, the Radionuclides and Revised Rad Rule, and the Consumer Confidence Rule.

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2023 – July 10, 2024
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
June 1, 2014 – June 30, 2014
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2014 – June 30, 2014
Resolved
Monitoring, Regular
—
Fluoride
January 1, 1999 – March 31, 1999
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
November 20, 1986 – June 15, 1990
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
May 1, 1982 – April 30, 1985
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, 2023 – July 10, 2024	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
June 1, 2014 – June 30, 2014	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 2014 – June 30, 2014	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 1999 – March 31, 1999	Monitoring, Regular	Fluoride	—	Resolved
November 20, 1986 – June 15, 1990	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
May 1, 1982 – April 30, 1985	Maximum Contaminant Level Violation, Average	Fluoride	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

December 1, 2023State Violation/Reminder Notice2 linked violations
July 13, 2015State Public Notification received2 linked violations
August 5, 2014State Compliance achieved2 linked violations
July 16, 2014State Violation/Reminder Notice1 linked violation
July 16, 2014State Violation/Reminder Notice2 linked violations
July 16, 2014State Public Notification requested1 linked violation
July 27, 2009State Compliance achieved1 linked violation
July 16, 2009State Violation/Reminder Notice1 linked violation
April 8, 1999State Public Notification requested1 linked violation
April 8, 1999State Violation/Reminder Notice1 linked violation
June 15, 1990State Compliance achieved1 linked violation
June 14, 1990State Public Notification requested1 linked violation
January 29, 1990State Public Notification received1 linked violation
November 14, 1985State Compliance achieved1 linked violation

Common questions

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

LAWSON, LARRY D.

309-368-0009

ONEIDA, IL 61467