Is O FALLON required to publish a Consumer Confidence Report?

Yes. O FALLON 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 O FALLON’s next Consumer Confidence Report due?

O FALLON’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.

O'FALLON, IL · St. Clair County

O FALLON Water System

Consumer Confidence Report status

O FALLON 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 O FALLON.

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): IL1631100
System type: Community Water System
Population served: 46,603
Service connections: 18,497
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

O FALLON is one of 225 community water systems in Illinois in the 10,001 to 100,000 people size category, serving 46,603 people from surface water.

As of August 1, 2026, its federal record holds 22 entries between 1991 and 2026, all of which EPA lists as closed.

Of the 22, 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 the Total Coliform Rules, the Lead and Copper Rule, and the Stage 2 Disinfectants and Disinfection Byproducts Rule.

Violation history

Monitoring and Reporting (DBP)
—
TTHM
January 1, 2026 – March 31, 2026
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2026 – March 31, 2026
Archived
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
July 1, 1999 – July 31, 1999
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 1999 – July 31, 1999
Archived
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
April 1, 1998 – April 30, 1998
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 1998 – April 30, 1998
Archived
Water Quality Parameter M/R
—
Lead and Copper Rule
April 1, 1997 – June 30, 1997
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 1997 – March 31, 1997
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
March 1, 1996 – March 31, 1996
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 1995 – November 30, 1995
Archived
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
September 1, 1994 – September 30, 1994
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 1994 – September 30, 1994
Archived
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
July 1, 1994 – July 31, 1994
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 1994 – July 31, 1994
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
February 1, 1994 – February 28, 1994
Archived
OCCT/SOWT Study/Recommendation
Health-based
Lead and Copper Rule
September 1, 1993 – February 6, 1995
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 1993 – August 31, 1993
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
March 1, 1993 – March 31, 1993
Archived
OCCT/SOWT Study/Recommendation
Health-based
Lead and Copper Rule
February 4, 1993 – February 6, 1995
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
September 1, 1992 – September 30, 1992
Archived
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
April 1, 1992 – December 8, 1992
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 1991 – July 31, 1991
Archived

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	Monitoring and Reporting (DBP)	TTHM	—	Archived
January 1, 2026 – March 31, 2026	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
July 1, 1999 – July 31, 1999	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Archived
July 1, 1999 – July 31, 1999	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
April 1, 1998 – April 30, 1998	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
April 1, 1998 – April 30, 1998	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
April 1, 1997 – June 30, 1997	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
January 1, 1997 – March 31, 1997	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
March 1, 1996 – March 31, 1996	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
November 1, 1995 – November 30, 1995	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
September 1, 1994 – September 30, 1994	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Archived
September 1, 1994 – September 30, 1994	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
July 1, 1994 – July 31, 1994	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
July 1, 1994 – July 31, 1994	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
February 1, 1994 – February 28, 1994	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
September 1, 1993 – February 6, 1995	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Health-based	Resolved
August 1, 1993 – August 31, 1993	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
March 1, 1993 – March 31, 1993	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
February 4, 1993 – February 6, 1995	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Health-based	Resolved
September 1, 1992 – September 30, 1992	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
April 1, 1992 – December 8, 1992	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 1991 – July 31, 1991	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived

Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state

Enforcement actions

July 20, 2007State Compliance achieved1 linked violation
July 12, 2007State Violation/Reminder Notice1 linked violation
September 15, 1999State Public Notification requested2 linked violations
September 15, 1999State Violation/Reminder Notice2 linked violations
June 27, 1998State Public Notification requested2 linked violations
June 27, 1998State Violation/Reminder Notice2 linked violations
April 1, 1998State Compliance achieved2 linked violations
November 2, 1996State Violation/Reminder Notice1 linked violation
November 2, 1996State Public Notification requested1 linked violation
September 18, 1996State Public Notification received1 linked violation
February 3, 1996State Violation/Reminder Notice1 linked violation
February 3, 1996State Public Notification requested1 linked violation
May 7, 1995State Public Notification received1 linked violation
May 4, 1995State Public Notification requested1 linked violation
May 4, 1995State Violation/Reminder Notice1 linked violation
February 6, 1995State Compliance achieved2 linked violations
December 3, 1994State Public Notification requested5 linked violations
October 2, 1994State Public Notification requested4 linked violations
April 14, 1994State Violation/Reminder Notice2 linked violations
April 14, 1994State Violation/Reminder Notice2 linked violations
April 14, 1994State Public Notification requested2 linked violations
April 14, 1994State Public Notification requested2 linked violations
April 14, 1994State Violation/Reminder Notice2 linked violations
March 2, 1994State Public Notification received2 linked violations
March 2, 1994State Public Notification received3 linked violations
March 2, 1994State Public Notification received2 linked violations
October 14, 1993State Public Notification received2 linked violations
October 14, 1993State Public Notification received2 linked violations
October 10, 1993State Violation/Reminder Notice2 linked violations
October 10, 1993State Public Notification requested2 linked violations
May 6, 1993State Violation/Reminder Notice1 linked violation
May 6, 1993State Public Notification requested1 linked violation
December 8, 1992State Compliance achieved1 linked violation
November 7, 1992State Public Notification requested2 linked violations
November 7, 1992State Violation/Reminder Notice2 linked violations
April 12, 1990State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
April 12, 1990State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
April 4, 1990State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
November 11, 1989State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record

Common questions

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

BELL, HEIDE

618-624-4500

O'FALLON, IL 62269