How long does a new septic system installation take?
Installation timing depends on site evaluation, design, permits, access, weather, materials, inspections, and the professionals involved. Confirm the current process and schedule with the approving authority and General Septic.
A new septic system installation has separate planning, permitting, construction, and final-inspection stages. Before excavation, the property generally needs a site evaluation, a design from an appropriately credentialed onsite-sewage-system designer, and approval from the applicable county health authority. King, Pierce, and Snohomish counties publish different processes, and site constraints or advanced treatment can add review steps.
After approval, construction may include excavation, tank and distribution components, laterals, backfill, and restoration. The county or other approving authority must complete any required final inspection before use. Confirm current timing, scope, and terms with the approving authority and General Septic.
Need help describing a septic request?
General Septic helps property owners across King, Pierce, and Snohomish counties request direct septic service from General Septic. Use the form above to share the relevant details.