Professionals must be licensed by the Minnesota Pollution Control Agency (MPCA) to pump, design or install onsite septic systems.
Questions to ask licensed professionals
The MPCA maintains a list of Licensed Professionals.
Search the MPCA database >>
Most local SSTS programs maintain a list of local professionals.
http://www.extension.umn.edu/OnsiteSewage/wastewater-contacts.html
The National Onsite Wastewater Recycling Association (NOWRA) has developed a septic professional locater where all their members get a free web listing.
Search the NOWRA database >>
For more information on septic professionals, go to the Professionals page