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Applications, forms, and fees
Find applications and forms for the on-site sewage/septic system industry.
NOTICE
The Environmental Health Services Division's permitting services will be temporarily closed from Friday, October 17 at 7 pm through Tuesday, October 28 as we transition to the Public Health Permit Center. The new system will launch and permitting services will resume on Wednesday, October 29. Please be patient with us during this transition time!
Wastewater applications
- Application for Final Subdivision (494 KB)
- Application for Health Department Approval of Building Permit (7.1 MB)
- Application for Health Department Review of Boundary Line Adjustment or Rezone 460 KB)
- Application for Winter Water Table Review (WWTR) (459 KB)
- Application to Change Designer of Record (306 KB)
- Pre-Application for Review of Subdivision (500 KB)
- Repair proposal form for on-site sewage system (OSS) (381 KB)
- Instructions for Preparing an Appeal to the Health Officer via the King County Sewage Review Committee (SRC) Process (442 KB)
Site design application form
- Online: See instructions on how to submit the On-Site Sewage System (OSS) Site Design application and required and optional checklist
- Submit your application at the online services portal
- Mail: Site Design Application Form for Individual On-Site Sewage System (OSS) (221 KB)
Wastewater forms
- On-site sewage systems (OSS) Record Drawing Certification of Completion (173 KB)
- OSS Performance Demonstration Report (386 KB)
- King County site development process flow chart (113 KB)
- Buyer's Declaration of Receipt of Copy of Notice of On-Site Sewage System Operation and Maintenance Requirements (example only) (11 KB)
- Drainfield Easement Form (example only) (62 KB)
- Declaration of Covenant: Detached Structure Restriction (396 KB)
- Declaration of Covenant: Bedroom Restriction (1.073 KB)
- Designer's Pre-Installation Inspection Report/Stub-Out Release (166 KB)
- District Waiver Request (19 KB)
- Request form of public information needed by OSM to complete inspection report (80 KB)
- Notice on Title Generic Form: Notice of On-site Sewage System Operation and Maintenance Requirements (OSSM) (197 KB)
- Non-conforming Notice on Title: Notice of On-Site Sewage System Operation and Maintenance Requirements (226 KB)
- Report of Wastewater Tank Abandonment (290 KB)
- Waiver form for property transfer inspection (49 KB)