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Sequoyah County, Oklahoma

Licensed Septic Companies in Sequoyah County, OK

7 septic companies serve Sequoyah County, Oklahoma, and 7 of them hold a Oklahoma septic license or certification matched to the Oklahoma Department of Environmental Quality list (data as of October 2026).

Septic services in Sequoyah County

Guides: Septic system installation · Aerobic septic systems · Installation cost · Pumping cost

7 septic companies in Sequoyah County

Muldrow 6

  • 4S Construction

    475338 E 1078 Rd, Muldrow, OK 74948

    • Licensed: Oklahoma DEQ Certified Septic Installer (Subsurface, Aerobic Spray) · #1104 (Oklahoma Department of Environmental Quality, verify)

    Per state license: Installation · Aerobic systems

    (479) 652-8320

  • Copeland Dozer and Backhoe

    475240 E 1140 Rd, Muldrow, OK 74948

    • Licensed: Oklahoma DEQ Certified Septic Installer (Subsurface, Lagoon, Aerobic Spray) · #326 (Oklahoma Department of Environmental Quality, verify)

    Per state license: Installation · Aerobic systems

    (479) 650-7927

  • Edwards Construction

    PO Box 1556, Muldrow, OK 74948

    • Licensed: Oklahoma DEQ Certified Septic Installer (Subsurface, Aerobic Spray) · #616 (Oklahoma Department of Environmental Quality, verify)

    Per state license: Installation · Aerobic systems

    (918) 427-4522

  • Floyd Equipment Service

    112714 S 4770 Rd, Muldrow, OK 74948

    • Licensed: Oklahoma DEQ Certified Septic Installer (Subsurface) · #112 (Oklahoma Department of Environmental Quality, verify)

    Per state license: Installation

    (479) 650-8336

  • Sequoyah Septic Company

    PO Box 1034, Muldrow, OK 74948

    • Licensed: Oklahoma DEQ Certified Septic Installer (Subsurface, Aerobic Spray) · #1083 (Oklahoma Department of Environmental Quality, verify)

    Per state license: Installation · Aerobic systems

    (918) 315-6129

  • Wheeler Trucking LLC Excavation & Septic

    108159 S 4740 Rd, Muldrow, OK 74948

    • Licensed: Oklahoma DEQ Certified Septic Installer (Aerobic Spray) · #1360 (Oklahoma Department of Environmental Quality, verify)

    Per state license: Installation · Aerobic systems

    (479) 719-6337

Vian 1

  • Gates Excavation

    100154 Hwy 82, Vian, OK 74962

    • Licensed: Oklahoma DEQ Certified Septic Installer (Subsurface, Lagoon, Aerobic Spray) · #349 (Oklahoma Department of Environmental Quality, verify)

    Per state license: Installation · Aerobic systems

    (918) 773-6235

Septic licensing in Oklahoma

Oklahoma certifies septic installers by system type: subsurface, lagoon, aerobic spray and aerobic drip. The Oklahoma DEQ, Environmental Complaints and Local Services issues these credentials: Certified installer (subsurface, lagoon, aerobic spray, aerobic drip).

Permits for new systems, replacements and most repairs are issued locally. Ask the contractor which office handles Sequoyah County and whether the permit fee is in their quote.

Oklahoma septic licensing: agencies, license types and how to check a license →

Septic companies in Sequoyah County: common questions

How many licensed septic companies are in Sequoyah County, OK?

7 septic companies serve Sequoyah County, Oklahoma, and 7 of them hold a Oklahoma septic license or certification matched to the Oklahoma Department of Environmental Quality 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 Oklahoma?

Oklahoma certifies septic installers by system type: subsurface, lagoon, aerobic spray and aerobic drip. The licensing body is the Oklahoma DEQ, Environmental Complaints and Local Services.

Which companies install septic systems in Sequoyah County?

7 listings in Sequoyah County install septic systems. New systems and replacements need a permit, so ask each installer to handle the permit and to show their Oklahoma license.

How do I check a septic contractor's license in Oklahoma?

Use the Oklahoma DEQ, Environmental Complaints and Local Services's lookup (https://applications.deq.ok.gov/certinstallers/certinstallers.aspx) and search the contractor's name or license number. Our guide to checking a septic license walks through it.