Federal Dam residents needing a septic permit need to go through Cass County.
INFO FOR CASS COUNTY
Physical Address
Courthouse Annex, 1st Floor
303 Minnesota Ave W
Walker, MN 56484
Mailing Address
P.O. Box 3000
Walker, MN 56484
Phone: (218) 547-7241
Fax: (218) 547-7429
Email: cass.esd@casscountymn.gov
Website: https://www.casscountymn.gov/1222/Environmental-Services