Indiana Onsite Wastewater Professionals Association

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  • Visit our                                   for up to date version of codes, State and County Contacts, useful industry links and MORE!

Review the Indiana Code Rule 410 and take the Installer's Practice exam in advance.   It's approximately 60 pages. Click on the link:

The Indiana State Department of Health's Environmental Health Division/Onsite Sewage Systems Program page is chock full of information regarding technologies, etc.  Click on this link to access this information:

ATTENTION HOMEOWNERS...if your IOWPA Certified Inspector is NOT using the IOWPA Inspector Report and Inspector Summary... the inspection is not recognized by IOWPA and MAY not be recognized by your county health department.

Visit this website to access homeowners tips and marketing toolkit for your business:

IOWPA is now accepting applications for 2018 Field Days, Homeowners may contact their local Health Departments to get the required assistance with your application process.

Amanda Lahners, LaPorte County recognized in Pumper Magazine for septic inspections at point-of-sale property transfer:

To prepare for the Inspector Certification Training, we recommend the following:
Print a copy and review both the Inspection Form and Summary. IOWPA does not recognize
any other form submitted and are encouraging county health departments to do the same. 
This form is the most comprehensive.

IOWPA is a nonprofit 501 (c) (3) tax exempt educational organization committed to
protecting the public health and the environment of Indiana by improving and
increasing access to wastewater treatment for individuals and communities living
beyond centralized wastewater treatment facilities. IOWPA accepts monetary
donations by check, money order, credit card etc, by mail.  Your contributions are
tax deductible and you will receive written acknowledgement of your donation for
your tax records.

  • Click HereTo review changes in Rule 410 made in 2014

Upcoming Dates:


  • WWETT Show February 22nd-24th, Indiana Convention Center, Indianapolis
  • Residential OSS Design Workshops,  EVENTS PAGE  FOR REGISTRATION INFO
    • March 6, 2018 -   Marshall County
    • March 21, 2018 - Dubois County
    • March 27. 2018 - Putnam County
    • April 5, 2018 -     Wells County
    • April 10, 2018 -   Ripley County
    • Each workshop is 8:30 a.m. - 12:30  p.m.
    • Register at
    • March 8, 2018Central Indiana, (Danville) Installers ExamEVENTS PAGE FOR REGISTRATION INFO
    • March 16, 2018Southern Indiana (Clark Co.) Installers Exam, EVENTS PAGE FOR REGISTRATION INFO
    • April 3, 2018- Northern Indiana (DeKalb Co.) Installers Exam,EVENTS PAGEFOR REGISTRATION INFO
    • April 23rd – Installer/Inspector Rule Training and Installer Exam (info to follow) Tentative Marion County
    • April 24-26 – Inspector Training and Exam (info to follow) Tentative Marion County
    • May 15-16 –  Inspector Training and Exam (info to follow) Marshall County