Licensed Septic Companies in Winona County, MN
10 septic companies serve Winona County, Minnesota, and 10 of them hold a Minnesota septic license or certification matched to the Minnesota Pollution Control Agency list (data as of October 2026).
Septic services in Winona County
Guides: Septic tank pumping · Septic system installation · Septic inspection · Aerobic septic systems · Installation cost · Pumping cost
10 septic companies in Winona County
Winona 5
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Cardinal Pumping & Drain Cleaning, Inc
30146 Northwood Dr, Winona, MN 55987
- Licensed: Minnesota MPCA Licensed SSTS (Septic) Business (Maintainer, Service Provider, Inspector) · #L1811 (Minnesota Pollution Control Agency, verify)
Per state license: Pumping · Inspection · Aerobic systems
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Kimo's Pumping & Portable Toilet Service
525 Cottonwood Dr, Winona, MN 55987
- Licensed: Minnesota MPCA Licensed SSTS (Septic) Business (Maintainer) · #L323 (Minnesota Pollution Control Agency, verify)
Per state license: Pumping
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Larsen Septic LLC
28428 McNally Ridge Rd, Winona, MN 55987
- Licensed: Minnesota MPCA Licensed SSTS (Septic) Business (Installer) · #L3110 (Minnesota Pollution Control Agency, verify)
Per state license: Installation
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O'Laughlin Trucking & Excavating, Mechanical, LLC
525 Cottonwood Dr, Winona, MN 55987
- Licensed: Minnesota MPCA Licensed SSTS (Septic) Business (Installer) · #L3900 (Minnesota Pollution Control Agency, verify)
Per state license: Installation
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Plumbers Mechanical Group LLC
293 Junction St, Winona, MN 55987
- Licensed: Minnesota MPCA Licensed SSTS (Septic) Business (Installer) · #L4497 (Minnesota Pollution Control Agency, verify)
Per state license: Installation
Saint Charles 4
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D J Thompson Excavating LLC
10684 Conaughty Dr, Saint Charles, MN 55972
- Licensed: Minnesota MPCA Licensed SSTS (Septic) Business (Installer) · #L3212 (Minnesota Pollution Control Agency, verify)
Per state license: Installation
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Heartland Excavating Inc
1431 Highway 14 SW, Saint Charles, MN 55972
- Licensed: Minnesota MPCA Licensed SSTS (Septic) Business (Installer) · #L2275 (Minnesota Pollution Control Agency, verify)
Per state license: Installation
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Pearson Backhoe Service Inc
24330 Richland Rd, Saint Charles, MN 55972
- Licensed: Minnesota MPCA Licensed SSTS (Septic) Business (Installer) · #L1163 (Minnesota Pollution Control Agency, verify)
Per state license: Installation
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T & R Excavating
24410 Highway 74 N, Saint Charles, MN 55972
- Licensed: Minnesota MPCA Licensed SSTS (Septic) Business (Installer) · #L1257 (Minnesota Pollution Control Agency, verify)
Per state license: Installation
Houston 1
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Krage Septic LLC
30037 Highway 76, Houston, MN 55943
- Licensed: Minnesota MPCA Licensed SSTS (Septic) Business (Installer) · #L4364 (Minnesota Pollution Control Agency, verify)
Per state license: Installation
No phone on the state list
No listings match those filters.
Septic licensing in Minnesota
Minnesota licenses septic (SSTS) businesses and certifies the individuals who work for them. The MPCA search shows each business's license, insurance and bond status. The Minnesota Pollution Control Agency (SSTS program) issues these credentials: SSTS business license (installer, maintainer, service provider, designer, inspector); Individual SSTS certifications.
Permits for new systems, replacements and most repairs are issued locally. Ask the contractor which office handles Winona County and whether the permit fee is in their quote.
Minnesota septic licensing: agencies, license types and how to check a license →
Septic companies in Winona County: common questions
How many licensed septic companies are in Winona County, MN?
10 septic companies serve Winona County, Minnesota, and 10 of them hold a Minnesota septic license or certification matched to the Minnesota Pollution Control Agency list (data as of October 2026). Each license badge on this page names the agency and links to its lookup so you can confirm it.
Who licenses septic contractors in Minnesota?
Minnesota licenses septic (SSTS) businesses and certifies the individuals who work for them. The MPCA search shows each business's license, insurance and bond status. The licensing body is the Minnesota Pollution Control Agency (SSTS program).
Which companies pump septic tanks in Winona County?
2 of the 10 listings in Winona County offer septic tank pumping, either on their own website or under a state pumper license. Use the service filter above to show only those companies.
Which companies install septic systems in Winona County?
8 listings in Winona County install septic systems. New systems and replacements need a permit, so ask each installer to handle the permit and to show their Minnesota license.
How do I check a septic contractor's license in Minnesota?
Use the Minnesota Pollution Control Agency (SSTS program)'s lookup (https://webapp.pca.state.mn.us/ssts/) and search the contractor's name or license number. Our guide to checking a septic license walks through it.