Licensed Septic Companies in Cottage Grove, OR
7 septic companies serve Cottage Grove, Oregon, and 7 of them hold a Oregon septic license or certification matched to the Oregon Department of Environmental Quality list (data as of October 2026).
Septic services in Cottage Grove
Guides: Septic system installation · Septic inspection · Septic repair · Drain field repair · Installation cost · Pumping cost
7 septic companies in Cottage Grove
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Arliss Jensen
740 Eastview Dr., Cottage Grove, OR 97424 · Lane County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3642 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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E.R. Pipeline Services, LLC
10 Van Buren Ave., Cottage Grove, OR 97424 · Lane County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #938 (Oregon Department of Environmental Quality, verify)
From their website: Installation · Inspection · Repair · Drain field
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Eugene Dirt Works
635 Taylor Ave, Cottage Grove, OR 97424 · Lane County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #4052 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Hendrickson Well Drilling, Inc
77483 S 6th St, Cottage Grove, OR 97424 · Lane County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #32 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Hidden Gem Septic LLC
140 N 19th St, Cottage Grove, OR 97424 · Lane County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1083 (Oregon Department of Environmental Quality, verify)
From their website: Risers & lids Per state license: Installation
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South Valley Plumbing Inc
PO Box 1254, Cottage Grove, OR 97424 · Lane County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3548 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Westco Contracting Services LLC
80321 Sears Rd, Cottage Grove, OR 97424 · Lane County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3436 (Oregon Department of Environmental Quality, verify)
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3438 (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 Cottage Grove and whether the permit fee is in their quote.
Oregon septic licensing: agencies, license types and how to check a license →
Septic companies in Cottage Grove: common questions
How many licensed septic companies are in Cottage Grove, OR?
7 septic companies serve Cottage Grove, Oregon, and 7 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 Cottage Grove?
7 listings in Cottage Grove 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.