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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 Wednesday, November 26 at 4 pm through Tuesday, December 9 as we transition to the Public Health Permit Center. The new system will launch and permitting services will resume on Wednesday, December 10. Customers may experience delays in services during this transition time. Thank you for your patience with us!
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)