15 Fig. 9: IEPA, Livestock Facility Investigation Reports (1986-2017) *No data available 2012-2017. IEPA Inspected Livestock Farms Utilizing Lagoons & Holding Ponds 1997-2011 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 250 151 218 180 149 180 92 81 86 37 40 65 58 34 3 3 Number of Livestock Farms 225 200 175 150 125 100 75 50 25 0 fig. 9 New concrete manure pit. Source: Maurer-Stutz, Inc. A farmer injects manure into the soil as a vital nutrient source for crop production.