Thurston County, Washington

UPDATED PHONE SCAM ALERT

Scam calls and emails are impersonating county employees and services: Permitting, Courts, Pretrial staff and Sheriff's Office deputies. Court staff don't call jurors, and Sheriff's deputies do not collect fines by phone. Report scams to Thurston County Sheriff's non-emergency line at 360-704-2740 and you can verify your Jury Service by clicking here. Click here for office or department contact info.

The content on the Thurston County website is currently provided in English. We are providing the “Translation” for approximately 10 languages. The goal of the translation is to provide visitors with limited English proficiency to access information on the website in other languages. The translations do not translate all types of documents, and it may not give you an exact translation all the time. The translations are made through an automated process, which may not result in accurate or precise translations, particularly of technical and legal terminology.
County Contacts
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Thurston County Washington

Public Health and Social Services

Septic Systems

For information regarding Septic Systems, please select from the options below: 

Septic Systems Permits & Resources

Septic system permitting resources, financial assistance, and applications for new on-site septic systems and repairs.

Care & Maintenance of Your Septic System

How to care, maintain, and protect a septic system.

Homeowner Maintenance & Requirements

Maintenance & requirements - not all systems within Thurston County require an Operational Certificate (OPC).

Hiring a Septic Professional

Current lists of septic system professionals certified to perform services in Thurston County, check with your contractor to make sure they are still certified.

Information & Guidance for Septic Professionals

Information to operate as a septic designer, installer, monitoring specialist or pumper in Thurston County.

Time of Transfer

Required process when selling a home. The Time of Transfer process requires the septic system to be pumped and inspected by a Thurston County certified septic system professional prior to application submittal.

Frequently Asked Questions

Frequently Asked Questions about septic systems, time of transfer, maintenance & care, and more.

3D Models of Healthy and Unhealthy Common Septic Systems

Tacoma-Pierce County Health Department provides popular 3D models.

Contact our department or email us at environmental_health@co.thurston.wa.us if you have additional questions. 

Building Development Center (360)-786-5490 Craft 3 Loan  (360)-867-2170
General Questions/Failing System (360)-867-2673 Operation and Maintenance  (360)-867-2626
Septic Help Line (360)-867-2669 Septic, Land Use, and Drinking Water eh_tech@co.thurston.wa.us

Enviromental Health Issue Reporting

Enviromental Health Feedback