The Onsite Sewage Treatment Program (OSTP) is delivered by the University of Minnesota Water Resources Center which provides leadership in freshwater management through cutting-edge research, educational opportunities for students and professionals, and community outreach. OSTP has been educating professionals and the public in safe, cost-effective and environmentally sound wastewater treatment practices since 1973. 


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Requirements to participate in online workshops

  • An internet connection (broadband wired or wireless, with 600kbps down)
  • A computer/device with speakers (built-in or plug-in, or wireless Bluetooth)
  • A webcam - you may use your computer, tablet, or smartphone
  • A valid picture ID
  • You do not need a Zoom account, simply click the link we send you prior to the Zoom session. If you're unfamiliar with Zoom, test your Zoom connection.

MN soil training regions

When selecting a workshop location for soils continuing education we suggest registering in a location that has similar soil parent material to where you live or work. While you can attend anywhere in the state, Minnesota’s soil is complex and different regions of the state may have different soil characteristics. Use the Minnesota's soil training regions map to determine which location has soil most like where you typically work.

Questions or comments?

When to contact the OSTP

OSTP staff can answer questions about workshop registrations, workshop locations, workshop availability, publications, soils, design forms, research, small community issues, and technical assistance. Phone: 800-322-8642 or email [email protected].

When to contact the MPCA

MPCA SSTS staff can answer questions about your business license, professional certification, certification examinations, state rule interpretation, local ordinance assistance, and business complaints. Phone: 800-657-3864 or 651-757-2201 or email [email protected].

Late fees, substitutions, and cancellation policies

If you enroll after the course deadline, a mandatory $45 late fee will be automatically added to your workshop price. 

Cancellations must be received in writing by OSTP staff one business day prior to the workshop. Partial refunds are only issued for cancellations received in writing before the workshop begins. All refunds will be made in the manner as payment minus a $30 cancellation fee.

Checks returned by the bank will incur a $30 fee.

In the rare event that a course is cancelled, OSTP will issue a full refund. Courses are not cancelled due to inclement weather.

Attendance is required at all sessions of each workshop to receive a Certificate of Attendance. OSTP will forward your attendance certificate to the MPCA.