STAUNTON, IL · Madison County

WILLIAMSON Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of October 16, 2012. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.

If you are a resident looking for your current water provider, see water systems in Madison County, IL.

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): IL1191100
System type: Community Water System
Population served: 340
Service connections: 120
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

WILLIAMSON is one of 1,572 community water systems in Illinois in the 500 or fewer people size category, formerly serving 340 people from surface water.

EPA's federal records list this system as inactive in 2012; the record below is historical.

As of August 1, 2026, its federal record holds 11 entries between 1977 and 2011, all of which EPA lists as closed. Nothing has been added since 2011.

Of the 11, 3 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 Surface Water Treatment Rules, the Public Notice Rule and Revised PN Rule, and the Total Coliform Rules.

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2011 – August 12, 2011
Resolved
Public Notification Violation without NPDWR Violation
—
Public Notice
October 17, 2007 – December 6, 2007
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
October 17, 2007 – December 6, 2007
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
September 1, 2006 – September 30, 2006
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
June 1, 2004 – June 30, 2004
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
April 1, 2004 – April 30, 2004
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
January 1, 2004 – January 31, 2004
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
September 1, 2003 – September 30, 2003
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
July 1, 2003 – July 31, 2003
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
November 1, 1993 – November 30, 1993
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
July 1, 2011 – August 12, 2011	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 17, 2007 – December 6, 2007	Public Notification Violation without NPDWR Violation	Public Notice	—	Resolved
October 17, 2007 – December 6, 2007	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
September 1, 2006 – September 30, 2006	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 2004 – June 30, 2004	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
April 1, 2004 – April 30, 2004	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
January 1, 2004 – January 31, 2004	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
September 1, 2003 – September 30, 2003	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
July 1, 2003 – July 31, 2003	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
November 1, 1993 – November 30, 1993	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

January 1, 1994State Violation/Reminder Notice1 linked violation
January 1, 1994State Public Notification requested1 linked violation

Last known contact on file (system is inactive)

BENARDIN, LARRY

217-456-8231

STAUNTON, IL 62088