Now that IEPA has provided more clarification on what pesticide application activities would require a NPDES permit, we have updated our fact sheet on this subject. This regulation now applies to pesticide applications made to "waters of the US" instead of "waters of the State" which narrows the scope of the rule significantly.  In the document, "water of the US" is defined.  To view the fact sheet, click here http://ifca.com/media/NPDES.pdf