ONEIDA, IL · Knox County
ONEIDA Water System
Current status
No open violations on record as of July 4, 2026.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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)
Violation history
Consumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2023 – July 10, 2024
ResolvedMonitoring, Repeat Minor (TCR)
—Coliform (TCR)
June 1, 2014 – June 30, 2014
ResolvedMonitoring and Reporting (DBP)
—Chlorine
April 1, 2014 – June 30, 2014
ResolvedMonitoring, Regular
—Fluoride
January 1, 1999 – March 31, 1999
ResolvedMaximum Contaminant Level Violation, Average
Health-basedCombined Radium (-226 and -228)
November 20, 1986 – June 15, 1990
ResolvedMaximum Contaminant Level Violation, Average
Health-basedFluoride
May 1, 1982 – April 30, 1985
ArchivedMonitoring, 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 Public Notification requested2 linked violations
- July 16, 2014State Public Notification requested1 linked violation
- July 16, 2014State Violation/Reminder Notice1 linked violation
- July 27, 2009State Compliance achieved1 linked violation
- July 16, 2009State Violation/Reminder Notice1 linked violation
- April 8, 1999State Violation/Reminder Notice1 linked violation
- April 8, 1999State Public Notification requested1 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
- April 25, 1989State Public Notification received2 linked violations
- November 14, 1985State Compliance achieved1 linked violation
Contact
LAWSON, LARRY D.
309-368-0009
ONEIDA, IL 61467