Environmental Health
Septic Systems
  Septic Systems (Onsite Sewage Systems)  

Staff Availability for Questions

Environmental Health staff are available for questions at the Permit Assistance Center Tuesday, Wednesday and Thursday from 8 a.m. to 12:30 p.m. If you have questions about land use, septic systems, or wells, please be sure to come in on Tuesday, Wednesday or Thursday from 8 a.m. to 12:30 p.m., when staff from the Environmental Health Department are available to answer questions. For additional contact information, click here.

Septic System Permit Search

Click on our Web Site Card, which provides links and information on permit status and archives, and other helpful webpages and contact phone numbers.

You are now able to look up current permit status for Septic and Landuse Projects.  You will need either your permit or project number to complete the search. Current Permit Info

Are you looking for information about your septic system and want to find it "on-line"?  You can access information prior to 2009.  When you click on the link below   Septic Permit Info

Operation & Maintenance

Learn to properly operate and maintain your septic system.

Septic System Videos

Types of Septic Systems

Find out about the different types of septic systems.

Time of Transfer

Requirements for properties with on-site sewage systems when sold or transferred...more

Septic System Professionals

Operational Certificates

Thurston County requires certain types of septic systems to have Operational Certificates. Find out what is needed to renew the certificate. ...more

Financial Assistance Low-Interest Loans and Grant Programs

Administers several low-interest loan and grant programs to help residents who live in shellfish protection areas or need financial assistance to maintain existing systems and repair failing systems. ...more


Issues permits for new septic systems or when repairs to an existing system are needed. Currently under construction.

Educational Materials / Workshops

List of publications, workshops, and other information for septic system owners....more

FAQs - Frequently Asked Questions

Find the answers to common questions. ...more

Onsite Septic System Owner Education Project

New! Link to Final Report

Hot Topics
Popular Pages & Links
OSS Forms
Septic System Videos
How well
do you know your septic?

  • Septic Help Line
    (leave message)
  • General Questions
  • Henderson Watershed Protection Area O&M Questions
  • Permit Assistance Center
  • Failing Systems
  • Loan Program
    (failing systems only)
  • Brochures & Workshops
This page last updated: 08/13/15