Onsite Waste Water Treatment and Disposal Program (Septic System)

The primary goal of the Private Disposal Program is to prevent the transmission of disease through the exposure to sewage.  The McHenry County Public Health Ordinance contains stringent requirements for the siting of onsite wastewater treatment systems (septic systems).  Onsite wastewater treatment systems, which are properly sited, constructed and maintained, represent a viable, long-term wastewater treatment option for meeting public health and water quality goals.

• FAQs
• Well and/or Onsite Wastewater Treatment System Permit or Preliminary Review Application [PDF]
  • Application must be submitted in person or by mail.
• Educational Materials
• Portable Sanitation Association International Recommendations [PDF]
• Septic System Designer List [PDF]
• Official Soil Scientist List for Septic Suitability and Subdivision Mapping in McHenry County [PDF]
• Soil Standards Manual [PDF]
• List of Pumping Contractors [PDF]
• Fee Schedule [PDF]
• Incorporated Materials, Article IV
  • Illinois Private Sewage Disposal Licensing Act (225 ILCS 225/1 et seq.) and Illinois Private Sewage Disposal Code (Title 77 Illinois Administrative Code, Chapter 1, Subchapter r, Part 905)
  • Wisconsin Mound Soil Absorption System Siting, Design, and Construction Manual, Small Scale Waste Management Project, University of Wisconsin-Madison, January, 1990 [PDF]
  • Wisconsin at Grade Soil Absorption System Siting, Design, and Construction Manual, Small Scale Waste Management Project, University of Wisconsin-Madison, January 1990 [PDF]
  • Design and Installation of Low-Pressure Pipe Waste Treatment Systems, UNC Sea Grant College Publication, UNC-56-82-03, May, 1982 [PDF]

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