Licensed Septic Companies in Astoria, OR
15 septic companies serve Astoria, 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 Astoria
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AC/DC Excavating LLC
87180 Hwy 202, Astoria, OR 97103 · Clatsop County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #954 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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AC/DC Excavating LLC
87180 Hwy 202, Astoria, OR 97103 · Clatsop County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #926 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Blind Slough Logging, Inc.
41092 Ziak-Gnat Creek Ln, Astoria, OR 97103 · Clatsop County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #197 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Bud's Excavation LLC
42142 Tiffany Ln, Astoria, OR 97103 · Clatsop County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1159 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Dennis Larson Excavating
90128 Lewis and Clark Rd, Astoria, OR 97103 · Clatsop County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #4023 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Ed's Septic Tank Cleaning Service LLC
808 Glasgow Ave, Astoria, OR 97103 · Clatsop County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #877 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Green Mountain Development LLC
36089 Binder Slough Ln, Astoria, OR 97103 · Clatsop County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1077 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Jump Excavating
35655 Dow Ln, Astoria, OR 97103 · Clatsop County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #4038 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Kinney & Sons Dump Trucking LLC
91569 George Hill Rd, Astoria, OR 97103 · Clatsop County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #764 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Old World Renovation
428 Floral St., Astoria, OR 97103 · Clatsop County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3466 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Robert Martens Excavating
37166 Danner Ridge Lane, Astoria, OR 97103 · Clatsop County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3643 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Robert Martens Excavation, LTD
92859 Renee Rd, Astoria, OR 97103 · Clatsop County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #338 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Thoreson Excavating LLC
91594 Youngs River Rd, Astoria, OR 97103 · Clatsop County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1091 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Tyler Flavin
92277 Koppisch Rd, Astoria, OR 97103 · Clatsop County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3638 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Vanosdol Construction LLC
35134 Hellisgo Ln, Astoria, OR 97103 · Clatsop County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3582 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
No listings match those filters.
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 Astoria and whether the permit fee is in their quote.
Oregon septic licensing: agencies, license types and how to check a license →
Septic companies in Astoria: common questions
How many licensed septic companies are in Astoria, OR?
15 septic companies serve Astoria, 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 Astoria?
15 listings in Astoria 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.