July 18, 2026
What a new septic system costs in Whatcom County
Honest 2026 cost ranges for new septic systems in Whatcom County: gravity, pressure distribution and mound systems, plus design and permit fees, with sources.
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Articles about septic systems in Whatcom and Skagit counties. What things cost, how the county process works, and how to keep a system out of trouble. Every number we print has a source you can check.
July 18, 2026
How the septic permit process works in Whatcom County
The Whatcom County OSS permit process explained: soil evaluation, design, health department review, installation, inspection and the ROSS at property sale.
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Tell us about the property and what you need. The design review and site visit cost nothing.