On-site Septic System Permits, Inspections & Education

  1. Carlsborg Area OSS Status June 2023

    On-site Septic System Inspection Status Map

    This map project shows the inspection status of properties served by a septic system according to Clallam County Environmental Health database records. The OSS Status Map was last updated June 28, 2023 and is still under further development. Read on...
  2. Local On-site Septic Professional Industry Contacts

    Local On-site Septic Professional Industry Contacts

    The professionals who design, inspect, install and pump your septic system must be licensed or permitted to operate in Clallam County as well as bonded or licensed by the Department of Licensing. Read on...
  3. OnlinePermitSystem

    Online Permit System Records

    All Clallam County Cases can be reviewed with some document records displayed as downloadable PDF's that can also be viewed in browser. Septic system permits and record drawings should be available as attached documents along w/some inspection reports. More info

What does Clallam County’s On-site Program do?

We protect public health and the environment by making sure septic systems function properly! The On-site Program assures that septic systems are designed, installed, and maintained in ways that meet State and local standards. It is called the On-site Program because septic systems generally treat and dispose of sewage on the site where it is created. A household septic system properly designed, installed, and maintained on suitable soil is as effective as a sophisticated sewage treatment plant.

Let's get started!

Find my Septic System

Find my Inspection Status

Find a Licensed Professional

Become Septics 201 DIY Certified

File a Sewage Complaint

Submit my DIY Inspection Online

Looking for something else? Choose a topic below:

Codes and Regulations Opens in new window
Codes and Regulations
It's the law.


File, track and find permit-related documentation
Rebates, grants and loans
Resources for Professionals
Professional Resources
Let's get to work!
Resources for Homeowners
Homeowner Resources
Find all kinds of information on taking care of your system.


What else have we been working on?

OSS Inspections
Either by a professional or DIY, all systems must be regularly inspected!
Become Septic Smart
Become Septic Smart
Educational info from the EPA!

Some of these projects have been funded wholly or in part by the United States Environmental Protection Agency under assistance agreement PC-01J18001 to the Washington State Department of Health. The contents of these documents do not necessarily reflect the views and policies of the Environmental Protection Agency, nor does mention of trade names or commercial products constitute endorsement or recommendation for use.