Is WOODSTOCK required to publish a Consumer Confidence Report?

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

WOODSTOCK’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.

WOODSTOCK, IL · McHenry County

WOODSTOCK Water System

Consumer Confidence Report status

WOODSTOCK 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 WOODSTOCK.

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

WOODSTOCK is one of 225 community water systems in Illinois in the 10,001 to 100,000 people size category, serving 25,630 people from groundwater.

As of August 1, 2026, its federal record holds 9 entries between 1977 and 2025, all of which EPA lists as closed.

Of the 9, 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 Total Coliform Rules, the Stage 2 Disinfectants and Disinfection Byproducts Rule, and the Lead and Copper Rule.

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
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 1997 – April 9, 1998
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
January 1, 1997 – April 9, 1998	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	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
April 13, 2025State Violation/Reminder Notice5 linked violations
March 13, 2025State Public Notification received1 linked violation
March 13, 2025State Compliance achieved2 linked violations
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

Common questions

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

AYMOND, BRENT

815-338-6118

WOODSTOCK, IL 60098