Is TISKILWA required to publish a Consumer Confidence Report?

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

TISKILWA’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.

TISKILWA, IL · Bureau County

TISKILWA Water System

Consumer Confidence Report status

TISKILWA 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 TISKILWA.

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): IL0111050
System type: Community Water System
Population served: 740
Service connections: 360
Ownership: local government
Water source: groundwater (wells)

TISKILWA is one of 773 community water systems in Illinois in the 501 to 3,300 people size category, serving 740 people from groundwater.

As of August 1, 2026, its federal record holds 10 entries between 1977 and 2020, all of which EPA lists as closed. Nothing has been added since 2020.

All 10 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 Lead and Copper Rule, the Total Coliform Rules, and synthetic organic chemicals.

Violation history

Monitoring, Regular
—
Diquat
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
July 1, 2000 – July 31, 2000
Archived
Water Quality Parameter M/R
—
Lead and Copper Rule
April 1, 2000 – June 30, 2000
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 2000 – March 31, 2000
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
October 1, 1999 – December 31, 1999
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
July 1, 1999 – September 30, 1999
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
July 1, 1999 – June 30, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 1997 – August 31, 1997
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 1994 – May 31, 1994
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
January 1, 2020 – December 31, 2022	Monitoring, Regular	Diquat	—	Resolved
July 1, 2000 – July 31, 2000	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Archived
April 1, 2000 – June 30, 2000	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
January 1, 2000 – March 31, 2000	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
October 1, 1999 – December 31, 1999	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
July 1, 1999 – September 30, 1999	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
July 1, 1999 – June 30, 2001	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
August 1, 1997 – August 31, 1997	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
May 1, 1994 – May 31, 1994	Monitoring, Routine Major (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

August 8, 2025State Public Notification received1 linked violation
July 22, 2025State Public Notification requested1 linked violation
July 22, 2025State Violation/Reminder Notice1 linked violation
May 8, 2025State Compliance achieved1 linked violation
June 23, 2023State Compliance achieved2 linked violations
May 15, 2023State Public Notification received1 linked violation
May 15, 2023State Public Notification received1 linked violation
February 8, 2023State Public Notification requested1 linked violation
February 8, 2023State Violation/Reminder Notice1 linked violation
February 7, 2023State Violation/Reminder Notice1 linked violation
February 7, 2023State Public Notification requested1 linked violation
June 30, 2009State Compliance achieved1 linked violation
February 3, 2009State Public Notification received1 linked violation
January 20, 2009State Violation/Reminder Notice1 linked violation
January 20, 2009State Public Notification requested1 linked violation
July 10, 2003State Violation/Reminder Notice1 linked violation
July 3, 2003State Compliance achieved1 linked violation
June 30, 2001State Compliance achieved8 linked violations
September 15, 2000State Public Notification requested6 linked violations
October 18, 1997State Public Notification requested1 linked violation
October 18, 1997State Violation/Reminder Notice1 linked violation
February 9, 1995State Compliance achieved1 linked violation
August 4, 1994State Public Notification received1 linked violation
August 4, 1994State Public Notification received1 linked violation
July 16, 1994State Public Notification requested1 linked violation
July 16, 1994State Public Notification requested1 linked violation
July 16, 1994State Violation/Reminder Notice1 linked violation
July 16, 1994State Violation/Reminder Notice1 linked violation
November 5, 1992State Public Notification received1 linked violation
October 24, 1992State Public Notification requested1 linked violation
October 24, 1992State Violation/Reminder Notice1 linked violation
June 29, 1991State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
June 29, 1991State Public Notification requestedgeneral compliance action — not tied to a specific violation on record

Common questions

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

ACKER, DANIEL

815-303-7814

TISKILWA, IL 61368