Theis Septic Service

Certified septic pumping company · Winona, MN · Winona County

Certification status

Listed in the Minnesota MPCA SSTS licensed business registry as of 2026-07-23 — verify current status at the official source

Certification categories

Pumper

License / registration #

L1771

Location

PO Box 873, Winona, MN, 55987

Phone (from public registry)

(507) 454-2436

This profile is compiled from public registry records. It is not an endorsement, and The Septic Directory has no business relationship with Theis Septic Service unless noted. Is this your company? Claim or correct this listing — it's free.

What septic pumping certification means

Minnesota licenses the businesses that install, design, inspect and maintain (pump) subsurface sewage treatment systems (SSTS/septic) through the Pollution Control Agency; each licensed business works under certified individuals in those areas.

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