Licensed Septic Companies in Klamath County, OR
30 septic companies serve Klamath County, Oregon, and 30 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 Klamath County
Guides: Septic tank pumping · Septic system installation · Septic inspection · Drain field repair · Installation cost · Pumping cost
30 septic companies in Klamath County
Klamath Falls 21
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Alec Mozingo
4847 Shasta Way, Klamath Falls, OR 97603
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #4066 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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American Sanitation Inc
7246 Airway Dr., Klamath Falls, OR 97603
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #868 (Oregon Department of Environmental Quality, verify)
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1089 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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American Sanitation, Inc.
7246 Airway, Klamath Falls, OR 97603
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3644 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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American Sanitation, Inc.
1246 Airway Dr., Klamath Falls, OR 97603
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1044 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Andrews Building LLC
5826 Mason Lane, Klamath Falls, OR 97601
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3727 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Bear Valley Construction, LLC
12550 Hwy 66, Klamath Falls, OR 97601
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1088 (Oregon Department of Environmental Quality, verify)
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #4017 (Oregon Department of Environmental Quality, verify)
From their website: Pumping · Installation · Inspection
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Elite Excavation
1830 Old Fort Rd, Klamath Falls, OR 97601
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1142 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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H&H Northwest Innovations LLC
6920 Airway Drive, Klamath Falls, OR 97603
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #4010 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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High Desert Company
950 Del Fatti Ln, Klamath Falls, OR 97603
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #437 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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J&K Deese Excavation LLC
700 Main St Ste. 204A, Klamath Falls, OR 97601
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #523 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Jesus Zambrano
2336 Wantland Ave, Klamath Falls, OR 97601
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3467 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Legion Contracting & Excavation LLC
1292 Lynnewood Blvd, Klamath Falls, OR 97601
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3431 (Oregon Department of Environmental Quality, verify)
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3527 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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LT Excavating Inc
1719 Winona Way, Klamath Falls, OR 97603
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1193 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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McBride Excavating Inc.
4202 Fargo St., Klamath Falls, OR 97603
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #4049 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Modoc Services, Inc
11030 Hwy 39, Klamath Falls, OR 97603
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #749 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Morello Construction LLC
2637 Old Midland Rd, Klamath Falls, OR 97603
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #607 (Oregon Department of Environmental Quality, verify)
From their website: Installation · Drain field
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Moss Excavation Inc
6111 Reeder Rd, Klamath Falls, OR 97603
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #789 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Shakil Ross
1775 Washburn Way Suite B #156, Klamath Falls, OR 97603
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3834 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Thielsen Construction
1852 Logan St, Klamath Falls, OR 97603
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #888 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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WSH Enterprises, Inc
PO Box 7339, Klamath Falls, OR 97602
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #669 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Wynne Excavation LLC
6416 Onyx Ave., Klamath Falls, OR 97603
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3953 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Chiloquin 3
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James Say Backhoe & Excavating
PO Box 133, Chiloquin, OR 97624
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #62 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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JB's Backhoe Service
PO Box 180, Chiloquin, OR 97624
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #9 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Raymond Weaver
46925 The Dalles-California Hwy, Chiloquin, OR 97624
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3397 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Bonanza 2
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D & R Dump Truck & Backhoe Service LLC
1120 Bly Mnt. Cutoff Rd, Bonanza, OR 97623
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #163 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
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Hammerich Construction LLC
12823 Bliss Rd, Bonanza, OR 97623
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3905 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Beatty 1
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Big Time Excavation LLC
PO Box 222, Beatty, OR 97621
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #3920 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Fort Klamath 1
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3 Lakes Construction LLC
PO Box 421, Fort Klamath, OR 97626
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1078 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Gilchrist 1
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Jerry Walters
PO Box 844, Gilchrist, OR 97737
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #1169 (Oregon Department of Environmental Quality, verify)
Per state license: Installation
Keno 1
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A-One Septic Service, Inc
PO Box 419, Keno, OR 97627
- Licensed: Oregon DEQ Certified Onsite (Septic) Installer · #80 (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 Klamath 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 Klamath County: common questions
How many licensed septic companies are in Klamath County, OR?
30 septic companies serve Klamath County, Oregon, and 30 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 Klamath County?
1 of the 30 listings in Klamath 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 Klamath County?
30 listings in Klamath 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.