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
Former Extension Educator, Natural Resources Management

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