Septic Design
Gudmunson Septic, Inc. engineers a custom design for submittal to Health Department for their review and approval.
- Whatcom and Island Counties – an approved design is required to support a building permit and is valid for three years.
- Skagit County – an approved design is required to support a building permit and is valid for five years.
- Snohomish County -an approved design is required to support a building permit and is valid for two years.

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Helpful Links
Septic System Permitting Process
Homeowners Guide
to Septic Systems