Environmental Health

Onsite Wastewater Treatment and Disposal (Septic Systems)

Program Description

Application Packets

All applications must be accompanied by a site specific plot plan. Please contact our office and we will mail or email you the appropriate plot plans.

Applications for Undeveloped Land

Site Evaluation

A site evaluation is the first step in obtaining a permit for new site development utilizing a septic system. The purpose of the evaluation is to identify the best location and type of system for the site. Click here for information on Subdivisions.

  Site Evaluation Application Packet

Construction/Installation Permit

Installation permits are issued for construction of new sewage disposal systems to serve new site development. A favorable Site Evaluation for the property must be completed and issued before applying for an Installation permit. An owner of a property may install their own sewage disposal system. If you intend to do so, please contact our office so we can provide you with additional information and consultation.

  Construction/Installation Permit Packet

Applications for Existing Systems

Please contact our office to determine the appropriate application type and fee before proceeding.

Repair Permit

Repair permits are required for repairing or replacing failing sewage disposal systems that serve existing facilities.

Major repair permits are required when replacing a failing drainfield or when replacing a failing treatment unit (Sand Filter, RGF, or Alternative Treatment System) or any part thereof.

Major Repair Permit Packet

Minor repair permits are required for the replacement of a failing septic tank, broken pipe, distribution unit, etc.

Minor Repair Permit Packet

Alteration Permit

Alteration permits are required for changing or upgrading sewage disposal systems that serve existing facilities.

Major Alteration Permits are required when expanding or changing the location of a drainfield or treatment unit (Sand Filter, RGF, or Alternative Treatment System) or any part thereof.

Major Alteration Permit Packet

Minor alteration permits are required when replacing or relocating a septic tank, pipe, distribution unit, etc.

Minor Alteration Permit Packet

Authorization Notice

Authorization Notices are evaluations of existing sewage disposal systems to determine if the system is adequate for a specific proposed use, prior to making connection to or changing the use of the system.

Authorization Notice Application Packet

Planning Review

When a property is being divided, or a property line adjusted, reviews are done to ensure that the sewage disposal system is entirely on the correct parcel and that adequate area remains for a replacement system in the event it is needed.

Planning Review Application Packet

Existing System Evaluations

Linn County no longer provides Existing System Evaluation Reports.  Existing System Evaluation Reports can be completed by a certified maintenance provider, certified installer or other qualified person as described in Oregon Administrative Rule 340-071-0155(1)(a).

Oregon Department of Environmental Quality

Permit Renewal, Re-instatement or Transfer

Permits expire one year after the date of issuance and may be renewed or reinstated by the original permittee. They must be renewed or reinstated within one year of the expiration date of the permit.

Permits may be transferred from the original permittee to a new property owner if the transfer is completed before the original permit expires, and no changes in the permit are needed.  Otherwise, a new permit is required.  A transferred permit carries the same expiration date as the original permit.

Permit Renewal/Transfer Application Packet

Fee Schedule

Onsite program fees are subject to change on July 1 of each year.

Click here to obtain a copy of our current fees

Licensed Installers

Any person (except for the property owner) involved with the installation or construction of an on-site system or involved with the grading, excavation or earth-moving work associated with an on-site system must be licensed and bonded as an Installer by the Oregon Department of Environmental Quality.

Search the Department of Environmental Quality (DEQ) database for actively licensed installers by County.

Rules and Regulations

The requirements governing the siting and construction, alteration, repair, operation, and maintenance of onsite wastewater treatment systems are established in Oregon Administrative Rules (OAR) 340-71 and 340-73 and Oregon Revised Statutes (ORS) 454 and 468B.

Maintenance of Septic Systems


Property owners are responsible for the operation and maintenance of their septic systems. A properly designed, constructed, and maintained onsite system can provide years of trouble free service. The following links may provide you with useful information on the care of your system.

Alternative Treatment Technology, Sand Filters, and Pressurized Distribution

If your system is an Alternative Treatment Technology, a commercial system Sand Filter, Recirculating Gravel Filter, or Pressurized Distribution System, you are required to maintain a service contract with a Certified Service Provider for the life of the system.

Other Available Publications





Main Office   view map
Linn County Annex
315 SW 4th Ave, 2nd Floor
P0 Box 100
Albany, OR 97321

Telephone: 541-967-3821
Toll free: 1-800-304-7468
FAX: 541-924-6904
TTY/TTD: 1-800-735-2900

Office & Staff Hours

Monday — Friday
Office: 8:30 am — 12:00 noon
  1:00 pm — 5:00 pm
Staff: 8:30 am — 10:00 am
  3:30 pm — 5:00 pm
  Or by Appointment

Contact Our Staff

Key Personnel by Service Area

Other Resources

Information Request Form
Search for Archived Permits
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