Licensed Septic Companies in Umatilla County, OR
16 septic companies serve Umatilla County, Oregon, and 16 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 Umatilla County
Guides: Septic tank pumping · Septic system installation · Septic repair · Drain field repair · Installation cost · Pumping cost
16 septic companies in Umatilla County
Hermiston 6
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Cornerstone Land Solutions
81371 N Golda Rd, Hermiston, OR 97838
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #4026 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Diego Gonzalez
770 N Ott Rd., Hermiston, OR 97838
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #4060 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Done-Rite Septic
30178 King Ln, Hermiston, OR 97838
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #155 (Oregon Department of Environmental Quality, verify)
From their website: Pumping · Drain field Per state license: Installation
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PNW Works LLC
1851 NE 10th St., Hermiston, OR 97838
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #4007 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Ramon Esquivel
80518 Culp Ln, Hermiston, OR 97838
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3616 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Sage River Construction
31946 Sunridge Ln, Hermiston, OR 97838
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3676 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Pendleton 3
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Blue Mountain Excavation
49274 Cabbage School Rd, Pendleton, OR 97801
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1039 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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D.S.C. Inc
PO Box 99, Pendleton, OR 97801
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3789 (Oregon Department of Environmental Quality, verify)
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3790 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Star S Ranch
3660 NW Houtama Rd, Pendleton, OR 97801
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3724 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Milton Freewater 2
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1EZ Septic System Installer LLC
906 Parallel St, Milton Freewater, OR 97862
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1048 (Oregon Department of Environmental Quality, verify)
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1049 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Freewater Plumbing LLC
85159 Winesap Rd, Milton Freewater, OR 97862
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3947 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Milton-Freewater 2
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Bob Humbert and Son
1560 South Main Street, Milton-Freewater, OR 97862
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3944 (Oregon Department of Environmental Quality, verify)
From their website: Installation · Repair
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Vixie Construction, LLC
85198 Edwards Rd, Milton-Freewater, OR 97862
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #280 (Oregon Department of Environmental Quality, verify)
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #279 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Stanfield 2
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Ben's Plumbing
PO Box 81, Stanfield, OR 97875
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3677 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Darrin Dyer
77045 S. Ash Rd, Stanfield, OR 97875
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3798 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Pilot Rock 1
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Aaron Hadden Excavating, LLC
PO Box 184, Pilot Rock, OR 97868
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #267 (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 Umatilla 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 Umatilla County: common questions
How many licensed septic companies are in Umatilla County, OR?
16 septic companies serve Umatilla County, Oregon, and 16 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 pump septic tanks in Umatilla County?
1 of the 16 listings in Umatilla County offer septic tank pumping, either on their own website or under a state pumper license. Use the service filter above to show only those companies.
Which companies install septic systems in Umatilla County?
16 listings in Umatilla 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.