All septic systems require a permit for new installations, repairs and replacements, house or building remodels or expansions, subdivisions, boundary line adjustments and rezones. Click below for more information about each permit:

	New septic design and installation
	Septic repair and replacement
	House or building remodels or expansions
	Subdivisions, Boundary line adjustments and rezones

Wastewater applications and forms

Some of the links below are in Adobe PDF format. Adobe Acrobat Reader must be installed on your computer to open PDFs. Click the icon at the left to download and install Reader for free.

For Well/Spring and Drinking Water Forms and Applications, click here.

NOTE: A septic system is also referred to as an "on-site sewage system" or OSS in official documents, forms and applications.

Wastewater Applications (formatted in Adobe PDF):

• Application for Appeal, King County Sewage Review Committee
• Application for Final Subdivision
• Application for Health Department Approval of Building Permit
• Application for Winter Water Table Review (WWTR)
• Application to Change Designer of Record
• Pre-Application for Review of Subdivision

Wastewater Forms (formatted in Adobe PDF):

• As-built Drawing Request form
  Print this form, fill in the details of your request, sign the bottom and mail it or bring it in person to:
  
  Eastgate Environmental Health
  14350 SE Eastgate Way
  Bellevue, WA 98007
  
  You may also fax it to 206-296-4919.
  
  
• Buyer's Declaration of Receipt of Copy of Notice of On-Site Sewage System Operation and Maintenance Requirements
• Drainfield Easement Form (example only)
• Declaration of Covenant: Detached Structure Restriction (example only)
• Declaration of Covenant: Bedroom Restriction (example only)
• "Notice on Title" Generic Form: Notice of On-site Sewage System Operation and Maintenance Requirements (OSSM)
• Nonconforming Notice on Title: Notice of On-Site Sewage System Operation and Maintenance Requirements
• Explanation of OSSM - Generic Form
• On-site Sewage System/Sewage Tank Service Report
• Report of Wastewater Tank Abandonment

Miscellaneous Forms:

• Approved Wastewater Tanks for OSS (PDF, 70 Kb)
• Property Owner Notification Letter

OSS Homeowner's Manual: Gravity System
OSS Homeowner's Manual: Mound System
OSS Homeowner's Manual: Pressure Distribution System
OSS Homeowner's Manual: Sand Filter System
OSS Homeowner's Manual: Sand Filter / Mound System

Codes from local and state Boards of Health and WAC

NOTE: A septic system is also referred to as an "on-site sewage system" or OSS in official documents, forms and applications.

• King County Board of Health Codes
  See BOH Code Titles 12 and 13 as it pertains to wastewater issues.
  
  
• Washington State Board of Health Codes & Publications
  Washington Administrative Code (WAC)
  Use the WAC search engine to look for:
  • Chapter 246-272 – On-site Sewage Systems
  • Chapter 246-273 – On-site Sewage System Additives
    
    
• Washington State Department of Health's Wastewater Management Publications
  Includes information regarding:
  • Recommended Standards and Guidance (RS&G's) for Performance, Application, Design, and Operation and Maintenance (Alternative On-Site Wastewater Systems)
  • List of Approved Systems and Products
  • Link to Rule Development Committee homepage

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