Licensed Septic Companies in Wasco County, OR
17 septic companies serve Wasco County, Oregon, and 17 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 Wasco County
Guides: Septic tank pumping · Septic system installation · Septic inspection · Septic repair · Drain field repair · Installation cost · Pumping cost
17 septic companies in Wasco County
The Dalles 10
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Arod Enterprises DBA Roto Rooter
PO Box 1365, The Dalles, OR 97058
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #933 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Bronson Excavating LLC
1106 E 10th St., The Dalles, OR 97058
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #4012 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Carlstrom Management Group LLC
3321 W 13th St., The Dalles, OR 97058
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1250 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Crestline Construction
3600 Crates Way Suite 100, The Dalles, OR 97058
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3722 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Crestline Construction
3600 Crates Way Suite 100, The Dalles, OR 97058
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3725 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Genesis Septic Solutions LLC
1837 E 14th St, The Dalles, OR 97058
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #822 (Oregon Department of Environmental Quality, verify)
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3518 (Oregon Department of Environmental Quality, verify)
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3534 (Oregon Department of Environmental Quality, verify)
- +2 more credentials
Per state license: Installation
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Gorge Grown
919 Chenoweth Loop W, The Dalles, OR 97058
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3581 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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MBR Construction
3265 Sandlin Rd, The Dalles, OR 97058
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #150 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Shearer Worx LLC
914 E 12th St, The Dalles, OR 97058
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3911 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Speedy Septic
309 W 10th St, The Dalles, OR 97058
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3731 (Oregon Department of Environmental Quality, verify)
From their website: Pumping · Installation · Inspection · Repair · Drain field · Risers & lids · Grease traps
Tygh Valley 2
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Delco Excavation LLC
79805 Rock Creek Dam Rd, Tygh Valley, OR 97063
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #548 (Oregon Department of Environmental Quality, verify)
From their website: Installation · Repair
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Little Rock Construction
104 N Morrow, Tygh Valley, OR 97063
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #728 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Dufur 1
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General Excavation
PO Box 372, Dufur, OR 97021
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #990 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Durfur 1
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Olson Excavating
PO Box 533, Durfur, OR 97021
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #648 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Maupin 1
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Jeffrey C O'Neal
PO Box 162, Maupin, OR 97037
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1042 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Moiser 1
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Syncline
PO Box 202, Moiser, OR 97040
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3432 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Wamic 1
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Cougar Excavation
80382 Wamic Market Rd, Wamic, OR 97063
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #412 (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 Wasco 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 Wasco County: common questions
How many licensed septic companies are in Wasco County, OR?
17 septic companies serve Wasco County, Oregon, and 17 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 Wasco County?
1 of the 17 listings in Wasco 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 Wasco County?
17 listings in Wasco 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.