UPDATE:  IOWWA has been in negotiations with the National Environmental Health Association (NEHA) to purchase the Certified Installer of Onsite Wastewater Treatment Systems (CIOWTS) credentialing test.     As of Wednesday March 23, 2018, that goal has been reached.    IOWWA is now the holding and ownership agent for the CIOWTS credentialing test.  We are working to finalize the test procedures however the program will basically remain the same.

We are working to finalize a test date to be held in early June 2018 in Iowa Falls.    As in the past, we will offer the Installation Overview course prior to the test however that will remain an optional choice for anyone submitting a test application.   A test date will also be scheduled for Fall 2018 in Iowa County.  

Please let us know if you have questions concerning this change in the CIOWTS test ownership.     We are compiling a list of names for those who would like to sign up for the test so please forward your contact information to IOWWA (including email if possible) to info@iowwa.com and we will contact you as soon as the June 2018 date is established.

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.  Counties currently requiring the CIOWTS credential are Benton, Black Hawk, Bremer, Buchanan, Butler, Chickasaw, Dallas, Delaware, Floyd, Grundy, Jasper, Jones, Linn, Marion, Scott, Story, Warren, Washington, and Winneshiek. Please check with your county sanitarian for specific requirements.    Iowa County will require the credential as of Jan. 1, 2019.

To review members and non-members who have the CIOWTS credential, please refer to the "CIOWTS List as of January 1, 2018, Members and Non-Members" PDF file in the Documents & Files section below.

Sponsored by IOWWA, the one and a half day Installation Overview course is available for the benefit of those taking the CIOWTS exam.   As soon as a test date is determined, IOWWA will schedule the date and location.    You are not required to take the Installation Overview prior to the test.    Continuing education earned from the Installation Overview will be credited to the first two-year credential cycle.   IOWWA member fee: $200.00 / non-member fee: $290.00

There are several options available to verify credential status:

  1. In the Documents & Files section, open the "CIOWTS Listing (member and non-member) as of January 1, 2018.   This is an alphabetical listing of those who currently hold the CIOWTS credential.
  2. Use the CIOWTS Certified Installer Search (search by zip code).   This will result in a list of IOWWA members who currently hold the CIOWTS credential.
  3. Another option is to select "Continuing Education Search" on the left side.   This search will show IOWWA members and non-members and allows you to search by name or company name.   The information lists the credential level (B-Basic or A-Advanced) as well as the credential expiration date.
  4. In the member search, you are able to search by zip code and the logo will show if the person holds the CIOWTS credential.
Important notice concerning a change to the CIOWTS "grace period".  If an individual falls short of meeting the minimum CE hour requirement for the credential and/or does not submit the appropriate renewal fees, he/she will be entered into a one-time grace period that can last for a period of up to 60 days from their credential expiration date.  At the end of the grace period all appropriate fees and continuing education hours must be submitted in order to receive the "active" status.  If a candidate fails to submit the appropriate fees and continuing education hours prior to the end of the grace period, his/her credential is revoked.  In order to re-obtain the credential, the individual must reapply and retake the examination.