Underground Designs LLC
✓ MPCA licensedSeptic (SSTS) inspection
Pequot Lakes, MN · Crow Wing County
Free, no obligation
Get a quote from Underground Designs LLC
Your request goes to Underground Designs LLC and up to 2 other nearby licensed Minnesota pros. They contact you directly.
Get a quoteOr call (218) 831-3980
Contact
Phone
(218) 831-3980Email
sethgravdahl@gmail.comAddress
10199 Ossawinnamakee Rd, Pequot Lakes, MN 56472
Licence / certification
- MPCA SSTS licence L2951: Inspector (exp. 2028-07-02)
- Also licensed: Designer, Installer, Pipelayer
- bonded · insured
People on the record
- Seth A Gravdahl (certified staff)
Source: MPCA list, retrieved 2026-10-12.