Resources for Professionals

Routing/Transmittal Form


A Routing/Transmittal Form (PDF) must accompany every application or revision that is submitted to Jefferson County - including those associated with a planning or building project. Be sure to fill out the form completely, as incomplete submittal forms may be returned or delayed.

Installation Starts & Requests for Inspections


Installation starts and requests for inspections (PDF) for pressure or pump tests must be faxed or emailed 24 hours prior to beginning construction or requesting inspection.

Washington State On-Site Sewage Association


The Washington On-Site Sewage Association (WOSSA) is a professional organization representing all professions in the siting, design, installation, use and regulation of on-site wastewater systems that will treat and dispose of sewage in a safe, reliable and cost-effective way. WOSSA operates the Northwest On-Site Waste Water Training Center to serve as a resource center and to promote professional excellence. A schedule of classes is available at the WOSSA website.

Washington State Department of Health Standards & Guidance


The Washington State Department of Health Wastewater Management Program is designed to protect public health by promoting the safe treatment and disposal of domestic and other non-industrial wastewater in areas of Washington not served by municipal sewage treatment works.

They provide assistance to local health jurisdictions regarding on-site wastewater issues and review and approve plans for large on-site sewage systems.

View a more detailed listing of standards and guidance.

Jefferson County Development Resources


The Jefferson County environmentally sensitive areas (ESA) mapping site project has been created to allow project proponents to get some idea of what issues might be involved on their land before they apply for a permit. View maps.

Access database tools for information about permits and cases, recorded and scanned documents, special reports and other pertinent data.

Useful Tables & Forms

On-Site Wastewater Designer Licensing & Inspector Certification Program


For more information on the certification and licensing program, go to the Washington State Department of Licensing website.