The CIOWTS Installer Search lists current year IOWWA members who have obtained the CIOWTS credential. The logo depicts whether the credential is held by IOWWA or by the National Environmental Health Association (NEHA). If a credential holder is not listed, check the membership status using the IOWWA Member Search.
Members and non-members, please refer to the "CIOWTS Member and Non-member List" PDF file in the Documents & Files below.
The IOWWA CIOWTS Certified Search is provided as a membership benefit and as a resource for those in need of onsite waste water information. The Iowa Onsite Waste Water Association (IOWWA) does not endorse or recommend any member firm.