Septic Systems in Illinois was developed by:

Duane Friend
Extension Educator, Energy and Environmental Stewardship
Calhoun/Cass/Greene/Morgan/Scott Unit
104 N Westgate Ave
Jacksonville, Illinois 62650
FAX 217-243-1544
John Church
Extension Educator, Natural Resources Management
, Illinois

Illinois Soil Classifiers Association
Aaron Rybski, Kendall County, Illinois Health Department
Steve Curatti, Kendall County, Illinois Health Department
Jane Johnson, Pike County, Illinois Health Department
Dale Bainter, Jersey County , Illinois Health Department
Marcia Wilhite, Illinois Environmental Protection Agency
Chad Moorman, Illinois Department of Public Health