WOODSTOCK, IL · McHenry County

WOODSTOCK 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): IL1110950
System type: Community Water System
Population served: 25,630
Service connections: 8,995
Ownership: local government
Water source: groundwater (wells)

Violation history

Public Notification Violation for NPDWR Violation
—
Public Notice
March 5, 2025 – March 13, 2025
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2025 – March 31, 2025
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2025 – March 31, 2025
Resolved
OCCT/SOWT Study/Recommendation
Health-based
Lead and Copper Rule
April 2, 2024 – February 17, 2025
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
August 1, 1996 – August 31, 1996
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 1996 – August 31, 1996
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
February 1, 1991 – February 28, 1991
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
March 5, 2025 – March 13, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring and Reporting (DBP)	TTHM	—	Resolved
April 2, 2024 – February 17, 2025	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Health-based	Resolved
August 1, 1996 – August 31, 1996	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Archived
August 1, 1996 – August 31, 1996	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
February 1, 1991 – February 28, 1991	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	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

April 13, 2025State Public Notification requested28 linked violations
March 13, 2025State Compliance achieved2 linked violations
March 13, 2025State Public Notification received1 linked violation
February 17, 2025State Compliance achieved1 linked violation
January 23, 2025State Public Notification requested1 linked violation
January 23, 2025State Violation/Reminder Notice1 linked violation
April 9, 1998State Compliance achieved1 linked violation
November 2, 1996State Violation/Reminder Notice2 linked violations
November 2, 1996State Public Notification requested2 linked violations
November 1, 1996State Public Notification received2 linked violations
September 3, 1994State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
September 3, 1994State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
February 6, 1993State Violation/Reminder Notice1 linked violation
February 6, 1993State Public Notification requested1 linked violation
December 24, 1992State Public Notification received1 linked violation
April 11, 1991State Violation/Reminder Notice1 linked violation
April 11, 1991State Public Notification requested1 linked violation
April 10, 1991State Public Notification received1 linked violation
February 16, 1989State Public Notification issued1 linked violation

Contact

AYMOND, BRENT

815-338-6118

WOODSTOCK, IL 60098