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  1. Welcome to IOWWA

    IOWWA - January 6, 2026 Annual Pre-Conference CERTIFIED INSTALLER OF ONSITE WASTEWATER TREATMENT SYSTEMS (CIOWTS) TEST DMACC - New Sanitarian …

  2. Upcoming Trainings | Iowa Onsite Waste Water Association

    IOWWA lists known upcoming training events below. For IOWWA trainings, information is provided concerning the approved hours for continuing education so check the event description.

  3. IOWWA Conference | Iowa Onsite Waste Water Association

    Receive special recognition throughout the conference as well as specific inclusion in the conference program and on the IOWWA website. A slide show runs continually during the …

  4. CERTIFIED INSTALLER OF ONSITE WASTEWATER TREATMENT …

    The IOWWA Certified Installer of Onsite Wastewater Treatment Systems (CIOWTS) Handbook can be viewed or downloaded in the below "Documents and Files" section. A pass score of …

  5. About Iowa Onsite Waste Water Association - iowwa.com

    IOWWA is one of the largest state organizations in the country focused on the onsite wastewater industry. Our members number some 400 and include regulators, installation contractors, …

  6. CIOWTS Certified Installer Search | Iowa Onsite Waste Water …

    Dec 1, 2025 · Certified Installer of Wastewater Treatment Systems (CIOWTS) Search CREDENTIAL CYCLE: The credential cycle starts on the first day of the month that you took …

  7. Continuing Education Search | Iowa Onsite Waste Water Association

    Apr 1, 2020 · The list will include continuing education hours as noted in the IOWWA database. If an event is not listed, please email [email protected] the Certificate of Attendance …

  8. Events | Iowa Onsite Waste Water Association - iowwa.com

    Submit the CIOWTS Test Application to IOWWA prior to December 31, 2025. The test application can be downloaded at the bottom of the Certification page on the IOWWA website or email …

  9. Membership Information | Iowa Onsite Waste Water Association

    IOWWA is one of the largest state organizations in the country focused on the onsite wastewater industry. Our members number more than 400 and include regulators, installation contractors, …

  10. IOWWA - January 7 - 8, 2026 Annual Conference

    IOWWA - January 7 - 8, 2026 Annual Conference Location: Doubletree by Hilton Cedar Rapids IA Cost: Members: $175.00/Non-members: $350.00 Membership Information Wed. Jan. 7 - 7:00 …