The CIOWTS Test will not be available from the National Environmental Health Association after December 31, 3017.    IOWWA is in negotiations with NEHA to provide the CIOWTS test in Iowa.    If you are interested in taking the CIOWTS exam please let IOWWA know so that you can be contacted when the test is available.    Email info@iowwa.com with your contact information.

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.

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.