STOCKTON, IL · Jo Daviess County
STOCKTON Water System
Consumer Confidence Report status
STOCKTON 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 STOCKTON.
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)
- IL0850450
- System type
- Community Water System
- Population served
- 1,728
- Service connections
- 874
- Ownership
- local government
- Water source
- groundwater (wells)
STOCKTON is one of 773 community water systems in Illinois in the 501 to 3,300 people size category, serving 1,728 people from groundwater.
As of August 1, 2026, its federal record holds 8 entries between 1992 and 2026, all of which EPA lists as closed.
Of the 8, 7 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 volatile organic chemicals, the Radionuclides and Revised Rad Rule, and the Total Coliform Rules.
Violation history
Maximum Contaminant Level Violation, Average
Health-basedCombined Radium (-226 and -228)
January 1, 2026 – March 31, 2026
ArchivedMonitoring, Regular
—Combined Radium (-226 and -228)
July 1, 2022 – September 30, 2022
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
January 1, 1994 – January 31, 1994
ArchivedMonitoring, Regular
—Tetrachloroethylene
July 1, 1992 – September 30, 1992
ResolvedMonitoring, Regular
—Xylenes, Total
July 1, 1992 – September 30, 1992
ResolvedMonitoring, Regular
—Ethylbenzene
July 1, 1992 – September 30, 1992
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
July 1, 1992 – September 30, 1992
ResolvedMonitoring, Regular
—1,2-Dichloroethane
July 1, 1992 – September 30, 1992
Resolved
Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2026 – March 31, 2026 | Maximum Contaminant Level Violation, Average | Combined Radium (-226 and -228) | Health-based | Archived |
| July 1, 2022 – September 30, 2022 | Monitoring, Regular | Combined Radium (-226 and -228) | — | Resolved |
| January 1, 1994 – January 31, 1994 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| July 1, 1992 – September 30, 1992 | Monitoring, Regular | Tetrachloroethylene | — | Resolved |
| July 1, 1992 – September 30, 1992 | Monitoring, Regular | Xylenes, Total | — | Resolved |
| July 1, 1992 – September 30, 1992 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| July 1, 1992 – September 30, 1992 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Resolved |
| July 1, 1992 – September 30, 1992 | Monitoring, Regular | 1,2-Dichloroethane | — | Resolved |
Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state
Enforcement actions
- March 18, 2026State Public Notification requested1 linked violation
- March 18, 2026State Violation/Reminder Notice1 linked violation
- November 7, 2022State Compliance achieved1 linked violation
- October 18, 2022State Violation/Reminder Notice1 linked violation
- October 18, 2022State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
- March 6, 1994State Public Notification requested1 linked violation
- March 6, 1994State Violation/Reminder Notice4 linked violations
- March 6, 1994State Violation/Reminder Notice1 linked violation
- March 3, 1994State Public Notification received1 linked violation
- May 6, 1993State Compliance achieved17 linked violations
- July 1, 1992State Public Notification requested17 linked violations
- July 1, 1992State Violation/Reminder Notice17 linked violations
- October 6, 1991State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
- October 6, 1991State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
- July 17, 1991State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
- July 6, 1991State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
- July 6, 1991State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
- May 8, 1991State Public Notification received1 linked violation
- May 2, 1991State Violation/Reminder Notice1 linked violation
- May 2, 1991State Public Notification requested1 linked violation
- September 14, 1989State Public Notification received1 linked violation
Common questions
Is STOCKTON required to publish a Consumer Confidence Report?
- Yes. STOCKTON 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 STOCKTON’s next Consumer Confidence Report due?
- STOCKTON’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does STOCKTON have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for STOCKTON.
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
HATLEY, STEPHANIE
815-947-2515
STOCKTON, IL 61085