Gateway Septic ServicesSeptic service company in Sedro-Woolley, WA

Gateway Septic Services is ranked #10 of 33 septic service companies in Sedro-Woolley by CR Score, with 53 out of 100 as of November 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

Gateway Septic Services is open Monday to Friday. Its listed hours are Monday to Friday, 8 AM – 4 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

Serves Sedro-Woolley and 8 towns within 25 miles: Burlington, Mount Vernon, Sudden Valley, Anacortes, Stanwood, Bellingham, Arlington and Oak Harbor. The list is based on the business's location and the usual service radius for septic and sewer service. Confirm your address is covered when you call.

Gateway Septic Services has a rating of 4.2 from 10 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

Call Gateway Septic Services on (360) 826-5520. The business is at Sedro-Woolley, WA 98284. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.