Crook County Courthouse
300 NE 3rd St, Rm. 12, Prineville, OR 97754

Office Hours
8:00am-4:00pm M-Th
8:00am-1:00pm F

Phone - (541) 447-8155
Fax - (541) 416-2139

Email - Contact us


Community Development On-Site Septic Division

On-Site septic - Home

The on-site septic program is responsible for residential on-site septic systems not having access to City sewer services in the County, that generate less than 2,500 gallons of waste a day.

In the following table you will find the most used applications and guidelines for site evaluations, system reports, new system construction, system repair, and system change authorization.

Call before you DIG: 800-332-2344   

Site Evaluation:
A site Evaluation must be done to determine which type and size of system is suitable for the property. This evaluation is usually done prior to a Parcel Final Plat or a Parcel Subdivision … 

Existing Systems:
An inspector will create a report to indicate the current state of the septic system. This is often required when buying or selling a house … 

New Construction:
A construction permit to install an onsite septic system on a parcel can be obtained by submitting an approved 
site evaluation,  a completed Land Use Compatibility Statement - LUCS (signed by Planning), and a Site Plan approval from Planning … Application 

This permit is required prior to any repair (tank replacement, new distribution/drop box) and or alteration work on a septic system or if the septic system fails … 

Septic Authorization:

This is required when a client wants to place into service, reconnect to, change use of, or increase the projected daily use sewage flow into an existing on-site septic system. Some examples: a bedroom addition, a medical hardship system addition, replacement of existing or damaged home, addition of commercial business to existing home, or unused on-site system older than 5 years … Application


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