Licensed Septic Companies in Ontario, OR
6 septic companies serve Ontario, Oregon, and 6 of them hold a Oregon septic license or certification matched to the Oregon Department of Environmental Quality list (data as of October 2026).
6 septic companies in Ontario
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Bezates Excavation
4573 Hyline Rd, Ontario, OR 97914 · Malheur County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3634 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Cutting Edge Curbing
4579 Plum Ln, Ontario, OR 97914 · Malheur County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3572 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Four Rivers Excavating
4675 Hwy 52, Ontario, OR 97914 · Malheur County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3994 (Oregon Department of Environmental Quality, verify)
From their website: Installation
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Goodman Sanitation
4980 Hyline Rd, Ontario, OR 97914 · Malheur County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #903 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Steve's Backhoe Service Inc
618 Railroad Ave, Ontario, OR 97914 · Malheur County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #614 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Tyler Wilson
3195 SW 18th Ave #2, Ontario, OR 97914 · Malheur County
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3738 (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 Ontario and whether the permit fee is in their quote.
Oregon septic licensing: agencies, license types and how to check a license →
Septic companies in Ontario: common questions
How many licensed septic companies are in Ontario, OR?
6 septic companies serve Ontario, Oregon, and 6 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 Ontario?
6 listings in Ontario 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.