IL Department of Public Health
http://www.dph.illinois.gov/topics-services/environmental-health-protection/private-sewage-disposal
Jefferson County Health Department
http://www.jeffersoncountyillinois.com/sewage-water
Washington county Health Department
https://washingtonco.illinois.gov/health-department/
Marion County Health Department
http://www.marioncountyhealthdept.org/index.html
Clinton County Health Department
http://clintoncountyhealth.com/environmental-health/private-sewage-disposal/
Madison County Health Department
https://www.co.madison.il.us/departments/health/index.php
St Clair County Health Department
http://www.health.co.st-clair.il.us/environmental/environmental/Pages/Sewage.aspx
Jackson Health Department
http://www.jchdonline.org/index.php
Perry County Health Department
https://perryhealth.net/environmental-health/sewage/
Randolph County Health Department
http://am.randolphco.org/index.php
Southern 7 Health Department
https://www.southern7.org/private-sewage-disposal--water-supply-programs.html
Wayne County Health Department
http://www.wchdil.com/environmental.html
IL Private Sewage Disposal Code
http://www.ilga.gov/commission/jcar/admincode/077/07700905sections.html
Septic System Evaluation Form
Septic Pumping Tips
https://extension.illinois.edu/septicsystems/pumping.cfm
How Septics Work