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Thurston County, Washington

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.

Public Health and Social Services

Septic System Components
Hiring a Septic Professional

The information on this page is for septic professionals who are certified or would like to become certified to operate in Thurston County.

Quick links to helpful documents and information

Article IV (TC) Construction Manual (TC) Common Septic Fees (TC)
EH Fee Schedule (TC) OnlineRME Permit Status (TC)
Septic Records Archived Information (TC) Septic & Sewage Publications (WA DOH) Septic System Basics Videos (WA DOH)

Information for Septic Professionals

Information septic system designers and engineers, who work in Thurston County, must be familiar with and utilize when designing systems that will be put in to use in our county.

Links to Documents May Not Work on All Browsers

General Information

Rules, Regulations and Fees Policy, Procedure, RS&G's

Memos, Letters and Policies

Information for those who want to be certified and operate to install septic systems in Thurston County.

Links to Documents May Not Work on All Browsers

General Information

Rules, Regulations & Fees 

Policy, Procedures, RS&G's Memos and Letters

Information for those who want to be certified as septic system monitoring specialists in Thurston County.

Links to Documents May Not Work on All Browsers

Website Links


​Listed in Order of Date Cancelled

Cancelled Policies

Building Development Center Hours (TC BDC)

OSS Tank Pump Out Report - Electronic Submittal Only: $15


Water Waste Management (WA DOH)

Septic & Sewage Publications (WA DOH)

Contact our Environmental Health Division or email us at if you have additional questions. 

Contact Phone Name Email
Designers & Installers  (360)-867-2673 Brad Sangston
Monitoring Specialists 360-867-2635 Maggie Morehouse
Pumpers 360-867-2635 Maggie Morehouse
Record Drawing 360-754-3355 ext. 7293  
Support Staff for Designers and Installers 360-867-2628 Wendi Fernandez
Support Staff for Certified Monitoring Specialists 360-867-2507 Susan Helland
Support Staff for Pumpers 360-867-2633 Susan Helland

Enviromental Health Issue Reporting

Enviromental Health Feedback