Drinking Water Compliance OS

OTTAWA, IL · LaSalle County

NAPLATE 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)
IL0990600
System type
Community Water System
Population served
465
Service connections
250
Ownership
local government
Water source
groundwater (wells)

Violation history

  • Monitoring, Regular

    Mercury

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    Chlordane

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    Nitrate

    January 1, 2013 – December 31, 2013

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    October 1, 2011 – December 31, 2011

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    July 19, 2011 – August 24, 2011

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    July 1, 2011 – September 30, 2011

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    April 1, 2011 – June 30, 2011

    Resolved
  • Monitoring, Regular

    Combined Radium (-226 and -228)

    January 1, 2011 – March 31, 2011

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    January 1, 2011 – March 31, 2011

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    October 1, 2010 – December 31, 2010

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    July 15, 2010 – August 5, 2010

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    July 1, 2010 – September 30, 2010

    Resolved
  • Monitoring, Regular

    Combined Radium (-226 and -228)

    July 1, 2010 – September 30, 2010

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    April 10, 2010 – June 30, 2010

    Resolved
  • Lead Consumer Notice

    Lead and Copper Rule

    January 2, 2010 – January 27, 2010

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    January 1, 2010 – March 31, 2010

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    October 1, 2009 – December 31, 2009

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    July 21, 2009 – September 10, 2009

    Resolved
  • Public Notification Violation without NPDWR Violation

    Public Notice

    July 21, 2009 – September 10, 2009

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    July 1, 2009 – September 30, 2009

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    April 1, 2009 – June 30, 2009

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    January 1, 2009 – March 31, 2009

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Gross Alpha, Excl. Radon and U

    January 1, 2009 – March 31, 2009

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    October 14, 2008 – October 28, 2008

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    October 1, 2008 – December 31, 2008

    Resolved
  • Monitoring, Repeat Minor (TCR)

    Coliform (TCR)

    August 1, 2008 – August 31, 2008

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    July 16, 2008 – October 28, 2008

    Resolved
  • Public Notification Violation without NPDWR Violation

    Public Notice

    July 16, 2008 – October 28, 2008

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    July 1, 2008 – September 30, 2008

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    April 1, 2008 – June 30, 2008

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    January 1, 2008 – March 31, 2008

    Resolved
  • Public Notification Violation without NPDWR Violation

    Public Notice

    October 18, 2007 – December 6, 2007

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    October 18, 2007 – December 6, 2007

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    October 1, 2007 – December 31, 2007

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    July 1, 2007 – September 30, 2007

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    April 1, 2007 – June 30, 2007

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    January 1, 2007 – March 31, 2007

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    October 1, 2006 – December 31, 2006

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    July 1, 2006 – September 30, 2006

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    January 1, 2006 – March 31, 2006

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    October 1, 2005 – December 31, 2005

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    April 1, 2005 – June 30, 2005

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    January 1, 2005 – March 31, 2005

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    July 1, 2004 – September 30, 2004

    Resolved
  • Public Notification Violation without NPDWR Violation

    Public Notice

    April 10, 2004 – October 4, 2004

    Resolved
  • Public Notification Violation for NPDWR Violation

    Public Notice

    April 10, 2004 – October 4, 2004

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    April 1, 2004 – June 30, 2004

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    January 1, 2004 – March 31, 2004

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    October 1, 2003 – December 31, 2003

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    July 1, 2003 – September 30, 2003

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    April 1, 2003 – June 30, 2003

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    January 1, 2003 – March 31, 2003

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    May 1, 1999 – September 26, 2000

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    May 23, 1995 – May 22, 1999

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    December 1, 1993 – April 30, 1995

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Combined Radium (-226 and -228)

    December 1, 1989 – November 30, 1993

    Resolved
  • Monitoring, Regular

    Gross Alpha, Excl. Radon and U

    June 30, 1977 – June 29, 1981

    Archived

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

Enforcement actions

Contact

RICK, ROBERT

815-481-6215

OTTAWA, IL 61350