Septic Application Turnaround Times

Current Turnaround Times

  • New Septic System Application: 5 Weeks *We are not accepting expedited septic applications at this time* 
  • Building Construction Clearance Review:  4 Weeks

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Designing and building an on-site sewage system (OSS) on your property can be a lengthy process. State and local rules and regulations require that you first hire a licensed professional who will evaluate your site, design a system, and complete the permit application process with our office.

The Snohomish County Health Department reviews septic system designs for single-family homes and small businesses (systems less than 3,500 gallons per day). The Washington Department of Health regulates larger septic systems in Snohomish County.