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Tillamook County, Oregon

Licensed Septic Companies in Tillamook County, OR

15 septic companies serve Tillamook County, Oregon, and 15 of them hold a Oregon septic license or certification matched to the Oregon Department of Environmental Quality list (data as of October 2026).

15 septic companies in Tillamook County

Tillamook 4

  • Durbin Excavation

    4770 Aldercove Rd W, Tillamook, OR 97141

    • Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #406 (Oregon Department of Environmental Quality, verify)

    Per state license: Installation

    (503) 812-2786

  • Gregory Gann Excavating

    6295 Tillamook River Rd, Tillamook, OR 97141

    • Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #879 (Oregon Department of Environmental Quality, verify)

    Per state license: Installation

    (541) 404-5052 facebook.com

  • Leonnig Excavating Inc

    5600 Hwy 101 S, Tillamook, OR 97141

    • Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #181 (Oregon Department of Environmental Quality, verify)
    • Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #180 (Oregon Department of Environmental Quality, verify)

    Per state license: Installation

    (503) 842-8634

  • Teninty & Son, Inc

    PO Box 475, Tillamook, OR 97141

    • Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #157 (Oregon Department of Environmental Quality, verify)

    Per state license: Installation

    (503) 842-5005

Nehalem 3

  • Mike Critelli Excavating

    18350 Peerless Loop, Nehalem, OR 97131

    • Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #219 (Oregon Department of Environmental Quality, verify)

    Per state license: Installation

    (503) 322-3484

  • Myers Excavation LLC

    40490 Northfork Rd, Nehalem, OR 97131

    • Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3806 (Oregon Department of Environmental Quality, verify)

    Per state license: Installation

    (503) 298-7315

  • Top Grade Excavation

    27150 Elk Trail, Nehalem, OR 97131

    • Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1010 (Oregon Department of Environmental Quality, verify)

    Per state license: Installation

    (503) 812-4331

Bay City 2

  • JM Excavating LLC

    7705 Seattle Ave., Bay City, OR 97107

    • Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1139 (Oregon Department of Environmental Quality, verify)

    Per state license: Installation

    (503) 801-5599

  • Tillamook Septic

    PO Box 3028, Bay City, OR 97107

    • Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3663 (Oregon Department of Environmental Quality, verify)

    Per state license: Installation

    (503) 457-6233

Neskowin 2

  • Pinecone Design + Build LLC

    5005 Schoolhouse Rd, Neskowin, OR 97149

    • Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3486 (Oregon Department of Environmental Quality, verify)

    Per state license: Installation

    (503) 801-7488

  • Vertical Contracting

    6995 Scherzinger Rd, Neskowin, OR 97149

    • Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3898 (Oregon Department of Environmental Quality, verify)

    Per state license: Installation

    (541) 921-0064

Cloverdale 1

Garibaldi 1

  • Advanced Excavation Inc

    PO Box 868, Garibaldi, OR 97118

    • Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #737 (Oregon Department of Environmental Quality, verify)

    Per state license: Installation

    (503) 812-6208

Hebo 1

  • Forest Pruter Excavating

    42345 Hwy 22, Hebo, OR 97122

    • Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3772 (Oregon Department of Environmental Quality, verify)

    Per state license: Installation

    (503) 801-3697

Pacific City 1

Septic licensing in Oregon

Oregon licenses sewage disposal businesses and certifies the installers who work for them. The Oregon DEQ, Sewage Disposal Service licensing issues these credentials: Sewage disposal service license (installer, pumper); DEQ installer certification.

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

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

Septic companies in Tillamook County: common questions

How many licensed septic companies are in Tillamook County, OR?

15 septic companies serve Tillamook County, Oregon, and 15 of them hold a Oregon septic license or certification matched to the Oregon 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 Oregon?

Oregon licenses sewage disposal businesses and certifies the installers who work for them. The licensing body is the Oregon DEQ, Sewage Disposal Service licensing.

Which companies install septic systems in Tillamook County?

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

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

Use the Oregon DEQ, Sewage Disposal Service licensing's lookup (https://www.oregon.gov/deq/permits/Pages/YDO-Public-Records.aspx) and search the contractor's name or license number. Our guide to checking a septic license walks through it.