Licensed Septic Companies in Yamhill County, OR
47 septic companies serve Yamhill County, Oregon, and 47 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 Yamhill County
Guides: Septic tank pumping · Septic system installation · Septic inspection · Septic repair · Drain field repair · Installation cost · Pumping cost
47 septic companies in Yamhill County
McMinnville 9
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American Legacy Homes
3780 NE Grandhaven Dr., McMinnville, OR 97128
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3629 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Blackhorn Excavation
20838 Baker Creek Rd, McMinnville, OR 97128
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1046 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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David Harold Schroeder Construction
4795 NE Riverside Lp, McMinnville, OR 97128
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #863 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Hillis Construction LLC
1677 NW 8th St., McMinnville, OR 97128
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1047 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Keller Excavation LLC
11570 SW River Bend Rd, McMinnville, OR 97128
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #342 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Kinion Excavation LLC
PO Box 242, McMinnville, OR 97128
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3385 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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McMinnville Pumping LLC
PO Box 953, McMinnville, OR 97128
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #643 (Oregon Department of Environmental Quality, verify)
From their website: Pumping · Inspection · Repair · Drain field · Risers & lids Per state license: Installation
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Trench Craft
375 SE Lawson Ln, McMinnville, OR 97128
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3753 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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WEME Construction
PO Box 272, McMinnville, OR 97128
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1071 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Dayton 7
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CAC Excavation
PO Box 815, Dayton, OR 97114
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #849 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Dirt Guys Excavating
13885 SE Fletcher Rd, Dayton, OR 97114
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #779 (Oregon Department of Environmental Quality, verify)
From their website: Pumping · Installation · Drain field · Perc testing
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Green Spark Homes
PO Box 143, Dayton, OR 97114
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3967 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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The Concrete Guy LLC
307 Flower Ln, Dayton, OR 97114
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3587 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Toney Excavation & Building
11130 Oak Dr, Dayton, OR 97114
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #191 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Turley Excavation LLC
17475 SE Neck Rd, Dayton, OR 97114
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #754 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Tyler Wood
18458 SE Lafayette Hwy, Dayton, OR 97114
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3427 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Willamina 7
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Bishop & Son Excavating LLC
8335 Rowell Creek Rd, Willamina, OR 97396
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3405 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Bowers Land Works
PO Box 481, Willamina, OR 97396
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #856 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Country Wide Electric and Construction
PO Box 902, Willamina, OR 97396
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3970 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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High Heaven Timberlands Inc.
8540 Fort Hill Rd., Willamina, OR 97396
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3627 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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M & M Excavation LLC
PO Box 811, Willamina, OR 97396
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3541 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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NW Woods Septic Service, LLC
313 NW Pacific Hills Dr., Willamina, OR 97396
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1069 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Stackhouse Logging Inc
PO Box 264, Willamina, OR 97396
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3421 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Amity 5
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JBC Construction
4132 SE Willamette St, Amity, OR 97101
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3746 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Nicole Jones
4650 SE Whiteson Rd, Amity, OR 97101
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3765 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Schilling and Sons Excavation
10820 SE Amity Rd, Amity, OR 97101
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3395 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Secor Homes
PO Box 258, Amity, OR 97101
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #4028 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Terry Vandegrift
7820 SE Sky Vista Dr, Amity, OR 97101
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #179 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Newberg 5
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Clear River Water Works
13845 NE Whitlow Ln, Newberg, OR 97132
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3607 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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DBV Ground Hawgs
111 N College St, Newberg, OR 97132
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1213 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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John R Kroo Construction, Inc
PO Box 969, Newberg, OR 97132
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #520 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Nexxus Construction LLC
17825 NE Hillsboro Hwy, Newberg, OR 97132
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3558 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Patriot Fence and Excavation LLC
23554 NE Sunnycrest Rd, Newberg, OR 97132
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #4088 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Sheridan 4
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Cary Laughlin Excavating Inc
20005 Rosebalm Rd, Sheridan, OR 97378
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #529 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Darren Risseeuw Trucking LLC
20260 Hwy 22, Sheridan, OR 97378
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1066 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Marshall Hensley
27414 SW Smithville Rd, Sheridan, OR 97378
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3553 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Native Excavation
797 NE Yamhill St, Sheridan, OR 97378
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3664 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Yamhill 4
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Barnett Builders, Inc.
17869 NE Stiller Mills Rd., Yamhill, OR 97148
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1115 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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King & Sons Excavating Inc
12797 NW Pike Rd, Yamhill, OR 97148
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1052 (Oregon Department of Environmental Quality, verify)
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3961 (Oregon Department of Environmental Quality, verify)
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3962 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Oregon Environmental Services
16784 NE Yamhill Rd, Yamhill, OR 97148
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3488 (Oregon Department of Environmental Quality, verify)
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3489 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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RAM Earthworks, LLC
21520 NE Cove Orchard Rd, Yamhill, OR 97148
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3609 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Carlton 3
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Core Excavation and Construction LLC
7890 NW Westside Rd, Carlton, OR 97111
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3845 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Lawson Corp
11599 NE Finn Hill Lp, Carlton, OR 97111
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #295 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Mitchell Excavating, LLC
PO Box 52, Carlton, OR 97111
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #802 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Dundee 2
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FSF Construction LLC
PO Box 64, Dundee, OR 97115
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3465 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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IGC Construction LLC
PO Box 41, Dundee, OR 97115
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3844 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Hermiston 1
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Warren Ewing Demolition & Excavation, LL
75540 Gun Club Rd., Hermiston, OR 97111
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #349 (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 Yamhill 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 Yamhill County: common questions
How many licensed septic companies are in Yamhill County, OR?
47 septic companies serve Yamhill County, Oregon, and 47 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 Yamhill County?
2 of the 47 listings in Yamhill 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 Yamhill County?
47 listings in Yamhill 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.