Publications & Order Forms


This past year, the IOWWA Board worked on designing a Homeowner Education Folder for our members to purchase and hand out while servicing or installing new septic systems.  The folder has information for the specifics of the system and household, a maintenance record section, installer / designer / maintenance provider information, information on how to locate a septic system, DO & DONTS of maintaining a septic system, and a place to add the diagram of the system as well as your contact information.  The folder was also designed with a pocket so you can add other information as well.  You can purchase these folders for $1.00 per folder in increments of 10.  You can have them directly shipped to you or you can pick them up from one of your Board members, just specify your preferred method of delivery at the time of order.  To order, you can print out and complete the Order Form click here.   For questions, please email


Installation of Wastewater Treatment Systems Handbook (CIOWTS Study Guide)


This study guide, published by the Consortium of Institutes for Decentralized Wastewater Treatment, is a 450 page notebook that serves as a self study aid for those interested in testing for the Certified Installer of Onsite Wastewater Treatment Systems (CIOWTS) credential.    The handbook is also a valuable office or field reference guide.  The study guide can be ordered through Iowa State University, use this link:  Installation of Wastewater Treatment Systems Manual.



The two-color IOWWA decal (apple green and navy blue) can be ordered in four-, eight- and twelve-inch diameters. These peel-and-stick decals can be affixed to vehicles, equipment and toolboxes to announce your affiliation with your industry's state organization. Let customers know that you support the professional standards that IOWWA maintains for its membership.   Click here for the order form.

Certified Installer of Onsite Wastewater Treatment Systems (CIOWTS) HANDBOOK.

The Handbook is being updated and will soon be available for download.   The primary purpose of the certification credential is to set a standard of practice and create a baseline of knowledge for onsite wastewater system installations. Iowa counties are encouraged to adopt regulations providing for licensing of installers and to require CIOWTS certification.

Refer to the tab "Certification" for additional information.

Iowa Department of Natural Resources -

Private Sewage Disposal Program 

New versions of IAC5567-Chapter 68, "Commercial Septic Tank Cleaners" and IAC567-Chapter 69, "Private Sewage Disposal Systems" have been adopted (August 2012).  The summary and new versions are available in the "Documents & Files" section of this page.  Or click here to open the IDNR web site.


file Homeowner Folder ORDER FORM.doc 0.09 MB           
file IOWWA Decal Order Form.doc 0.05 MB           
file DNR Summary of Changes to CH69 022112.doc 0.04 MB           
file DNR 08-08-2012 Chapter 567 69.pdf 0.30 MB