Lake Michigan - Osterman Beach
Osterman Beach is open.
Osterman Beach is monitored by Chicago Park District this year.
 
Advisory Year Start Date Reopen Date Days Closed Type Reason Pollution Source
2025
8/31/2025 11:00 AM 9/01/2025 11:00 AM 1 Contamination Advisory High bacteria levels UNKNOWN
2020
5/25/2020 8:00 AM 1/01/2021 10:00 AM 221 Beach Closed by Operator Other UNKNOWN
2019
7/30/2019 8:00 AM 7/31/2019 8:00 AM 1 Contamination Advisory High bacteria levels UNKNOWN
2018
8/28/2018 11:00 AM 8/30/2018 11:00 AM 2 Contamination Advisory High bacteria levels UNKNOWN
7/31/2018 11:00 AM 8/01/2018 11:00 AM 1 Contamination Advisory High bacteria levels UNKNOWN
7/17/2018 11:00 AM 7/18/2018 11:00 AM 1 Contamination Advisory High bacteria levels UNKNOWN
7/13/2018 11:00 AM 7/14/2018 11:00 AM 1 Contamination Advisory High bacteria levels UNKNOWN
7/06/2018 11:00 AM 7/07/2018 11:00 AM 1 Contamination Advisory High bacteria levels UNKNOWN
6/15/2018 11:00 AM 6/16/2018 11:00 AM 1 Contamination Advisory High bacteria levels UNKNOWN
5/30/2018 5/31/2018 1 Contamination Advisory High bacteria levels UNKNOWN
2017
8/31/2017 12:00 PM 9/01/2017 12:00 PM 1 Contamination Advisory High bacteria levels UNKNOWN
8/03/2017 12:00 PM 8/04/2017 12:00 PM 1 Contamination Advisory High bacteria levels UNKNOWN
7/24/2017 12:00 PM 7/25/2017 12:00 PM 1 Contamination Advisory High bacteria levels UNKNOWN
7/17/2017 12:00 PM 7/18/2017 12:00 PM 1 Contamination Advisory High bacteria levels UNKNOWN
2016
9/1/2016 9/3/2016 2 Contamination Advisory High bacteria levels UNKNOWN
8/27/2016 8/28/2016 1 Contamination Advisory High bacteria levels UNKNOWN
8/16/2016 8/17/2016 1 Contamination Advisory High bacteria levels UNKNOWN
7/16/2016 7/17/2016 1 Contamination Advisory High bacteria levels UNKNOWN
6/1/2016 6/3/2016 2 Contamination Advisory High bacteria levels UNKNOWN
2015
9/5/2015 9/6/2015 1 Contamination Advisory High bacteria levels UNKNOWN
9/1/2015 9/2/2015 1 Contamination Advisory High bacteria levels UNKNOWN
8/26/2015 8/27/2015 1 Contamination Advisory High bacteria levels UNKNOWN
8/19/2015 8/20/2015 1 Contamination Advisory High bacteria levels UNKNOWN
8/12/2015 8/13/2015 1 Contamination Advisory High bacteria levels UNKNOWN
7/16/2015 7/17/2015 1 Contamination Advisory High bacteria levels UNKNOWN
7/14/2015 7/15/2015 1 Contamination Advisory High bacteria levels UNKNOWN
7/8/2015 7/11/2015 3 Contamination Advisory High bacteria levels UNKNOWN
6/26/2015 6/27/2015 1 Contamination Advisory High bacteria levels UNKNOWN
6/17/2015 6/18/2015 1 Contamination Advisory High bacteria levels UNKNOWN
6/16/2015 6/17/2015 1 Closure Sewage POTW
6/12/2015 6/13/2015 1 Contamination Advisory High bacteria levels UNKNOWN
2014
8/13/2014 8/14/2014 1 Contamination Advisory High bacteria levels UNKNOWN
8/9/2014 8/12/2014 3 Contamination Advisory High bacteria levels UNKNOWN
7/29/2014 7/30/2014 1 Contamination Advisory High bacteria levels UNKNOWN
7/24/2014 7/25/2014 1 Contamination Advisory High bacteria levels UNKNOWN
7/1/2014 7/2/2014 1 Closure Sewage Combined Sewer Overflow
6/5/2014 6/6/2014 1 Contamination Advisory High bacteria levels UNKNOWN
2013
8/28/2013 8/29/2013 1 Contamination Advisory High bacteria levels UNKNOWN
8/13/2013 8/14/2013 1 Contamination Advisory High bacteria levels UNKNOWN
7/24/2013 7/25/2013 1 Contamination Advisory High bacteria levels UNKNOWN
6/25/2013 6/27/2013 2 Contamination Advisory High bacteria levels UNKNOWN
2012
8/28/2012 8/29/2012 1 Contamination Advisory High bacteria levels UNKNOWN
8/16/2012 8/17/2012 1 Contamination Advisory High bacteria levels UNKNOWN
8/11/2012 8/12/2012 1 Contamination Advisory High bacteria levels UNKNOWN
7/25/2012 7/26/2012 1 Contamination Advisory High bacteria levels UNKNOWN
6/26/2012 6/27/2012 1 Contamination Advisory High bacteria levels UNKNOWN
2011
8/10/2011 8/11/2011 1 Contamination Advisory High bacteria levels UNKNOWN
7/29/2011 7/30/2011 1 Closure High bacteria levels UNKNOWN
7/24/2011 7/26/2011 2 Contamination Advisory High bacteria levels UNKNOWN
7/23/2011 7/24/2011 1 Closure Sewage Combined Sewer Overflow
7/12/2011 7/13/2011 1 Contamination Advisory High bacteria levels UNKNOWN
6/10/2011 6/12/2011 2 Contamination Advisory High bacteria levels UNKNOWN
5/27/2011 5/28/2011 1 Closure High bacteria levels UNKNOWN
2010
9/2/2010 9/4/2010 2 Closure High bacteria levels UNKNOWN
8/21/2010 8/25/2010 4 Contamination Advisory High bacteria levels UNKNOWN
8/11/2010 8/12/2010 1 Contamination Advisory High bacteria levels UNKNOWN
8/5/2010 8/6/2010 1 Contamination Advisory High bacteria levels UNKNOWN
7/30/2010 7/31/2010 1 Contamination Advisory High bacteria levels UNKNOWN
7/24/2010 7/27/2010 3 Closure Sewage Combined Sewer Overflow
7/20/2010 7/22/2010 2 Contamination Advisory High bacteria levels UNKNOWN
7/10/2010 7/11/2010 1 Closure High bacteria levels UNKNOWN
6/24/2010 6/26/2010 2 Contamination Advisory High bacteria levels UNKNOWN
2009
8/20/2009 8/21/2009 1 Contamination Advisory High bacteria levels UNKNOWN
8/18/2009 8/19/2009 1 Contamination Advisory High bacteria levels UNKNOWN
8/15/2009 8/16/2009 1 Contamination Advisory High bacteria levels UNKNOWN
8/8/2009 8/9/2009 1 Closure High bacteria levels UNKNOWN
8/4/2009 8/5/2009 1 Closure High bacteria levels UNKNOWN
7/18/2009 7/19/2009 1 Contamination Advisory High bacteria levels UNKNOWN
6/27/2009 6/28/2009 1 Closure High bacteria levels UNKNOWN
6/19/2009 6/21/2009 2 Closure High bacteria levels POTW
6/17/2009 6/18/2009 1 Contamination Advisory High bacteria levels UNKNOWN
6/3/2009 6/4/2009 1 Contamination Advisory High bacteria levels Agriculture
2008
8/19/2008 8/20/2008 1 Closure High bacteria levels UNKNOWN
8/18/2008 8/19/2008 1 Contamination Advisory High bacteria levels UNKNOWN
8/8/2008 8/9/2008 1 Contamination Advisory High bacteria levels UNKNOWN
8/5/2008 8/6/2008 1 Closure High bacteria levels UNKNOWN
8/4/2008 8/5/2008 1 Contamination Advisory High bacteria levels UNKNOWN
7/11/2008 7/12/2008 1 Contamination Advisory High bacteria levels UNKNOWN
7/3/2008 7/4/2008 1 Contamination Advisory High bacteria levels UNKNOWN
2007
8/30/2007 8/31/2007 1 Closure High bacteria levels UNKNOWN
8/25/2007 8/26/2007 1 Closure High bacteria levels UNKNOWN
8/20/2007 8/22/2007 2 Closure High bacteria levels UNKNOWN
8/14/2007 8/15/2007 1 Closure High bacteria levels UNKNOWN
7/23/2007 7/24/2007 1 Closure High bacteria levels UNKNOWN
7/20/2007 7/21/2007 1 Closure High bacteria levels UNKNOWN
7/11/2007 7/12/2007 1 Closure High bacteria levels UNKNOWN
6/29/2007 6/30/2007 1 Closure High bacteria levels UNKNOWN
6/18/2007 6/20/2007 2 Closure High bacteria levels UNKNOWN
6/1/2007 6/2/2007 1 Closure High bacteria levels UNKNOWN
2006
8/29/2006 8/30/2006 1 Closure High bacteria levels Storm water runoff
8/28/2006 8/29/2006 1 Closure High bacteria levels Storm water runoff
8/21/2006 8/22/2006 1 Closure High bacteria levels Storm water runoff
8/3/2006 8/4/2006 1 Closure High bacteria levels Storm water runoff
7/26/2006 7/27/2006 1 Closure High bacteria levels Storm water runoff
7/25/2006 7/26/2006 1 Closure High bacteria levels Storm water runoff
7/20/2006 7/21/2006 1 Closure High bacteria levels Storm water runoff
7/10/2006 7/11/2006 1 Closure High bacteria levels Storm water runoff
7/9/2006 7/10/2006 1 Closure High bacteria levels Storm water runoff
7/7/2006 7/8/2006 1 Closure High bacteria levels UNKNOWN
7/6/2006 7/7/2006 1 Closure High bacteria levels Storm water runoff
6/21/2006 6/22/2006 1 Closure High bacteria levels Storm water runoff
Illinois Department of Public Health | 535 West Jefferson Street | Springfield, Illinois 62761
Phone 217-782-4977 | Fax 217-782-3987 | TTY 800-547-0466

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