Sewage industry forms and applications
- Application for Accessory Dwelling Unit (ADU with kitchen)
- Application for Appeal, King County Sewage Review Committee
- Application for Certificate of Competency, On-site System Maintainer (OSM)
- Application to Change Designer of Record
- Application for Final Subdivision
- Application for Health Department Approval of Building Permit
- Application for Health Department Review of Boundary Line Adjustment or Rezone
- Application for Pumper Business Owner for Certificate of Competency
- Application for Pumper Business Owner, Renewal of Certificate of Competency
- Application for Pumper Employee for Certificate of Competency
- Application for Pumper Employee, Renewal of Certificate of Competency
- Application for Renewal of Associate Installer Certificate of Competency
- Application for Renewal of Certificate of Competency, Master Installer of On-site Sewage Systems (OSS)
- Application for Report on Individual Sewage Disposal and Water System
- Application for Winter Water Table Review (WWTR)
- Pre-Application for Review of Subdivision
- Repair Proposal Form for On-Site Sewage System (OSS)
- 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)
- Liquid Waste Vehicle Inspection Report
- Monthly Wastewater Pumping Report
- Nonconforming Notice on Title
- Notice on Title Generic Form: Notice of On-site Sewage System Operation and Maintenance Requirements (OSSM)
- Explanation of OSSM - Generic Form
- OSS Performance Demonstration Report
- On-site Sewage System/Sewage Tank Service Report
- Record Drawing Certification of Completion (Cover Sheet)
- Report of Wastewater Tank Abandonment
- Request form of public information needed by OSM to complete inspection report
- Sample Operation/ Performance Monitoring Report form
Official copy of this form is made available only to licensed OSM
- Training & Continuing Education (CE) Record Form
- Waiver form for property transfer inspection
- Water Table Data Collection Form
As-built record drawings - search utility
Most of the on-site sewage system (OSS) record drawings, also known as as-builts, dating from 1998 are available online. The record drawings include both new construction and repairs to failing systems. Many older records are available but may not be as accurate, legible, or detailed as recent record drawings, as regulations have become more prescriptive.
- Application for Appeal, King County Sewage Review Committee
- Appellant Notice, Neighboring Property Owner
- Approved Wastewater Tanks for OSS
- Checklist for Associate Installer Applicants
Link takes you to the Certificates of Competency webpage. Click on the 'Associate Installer' drop-down menu to view checklist.
- Checklist for Pumper and/or Liquid Waste Hauler Certificate
Link takes you to the Certificates of Competency webpage. Click on the 'Liquid Waste Pumper/Hauler' drop-down menu to view checklist.
- Designer's OSS Pre-Installation Inspection Report/ Stub-Out Release
- Disposal Site Letter for Authorization
- District Waiver Request Form
- Guidance for Conducting Evaluation of Failed On-site Sewage System (OSS)
- Guidelines Manual for OSM
- Instructions for Notifying Property Owners
- Notification of Property Owners via King County Sewage Review Committee
- Performance Demonstration Report Form
Page 3 for Subsurface Drip Systems
- Process for getting OSS designed, installed and approved
- Property Owner Notification Letter
- Record Drawing Checklist (OSS)
- Site Design Application Form for Individual On-Site Sewage System (OSS)
- Site Application Template - Requirements for Submitting an OSS design in King County
- Site Design Checklist (OSS)
- Well and Drinking Water Forms and Covenant