Bison SepticSeptic service company in Kennewick, WA

Bison Septic is ranked #2 of 20 septic service companies in Kennewick by CR Score, with 62 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.

Bison Septic is open 7 days a week. Its listed hours are Monday to Friday, 7 AM – 5 PM; Saturday and Sunday, 9 AM – 5 PM. On Saturdays it is open 9 AM to 5 PM, and on Sundays 9 AM to 5 PM. Hours come from the business listing; holiday hours may differ.

Serves Kennewick and 4 towns within 25 miles: Finley, Pasco, Richland and West Richland. 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.

Bison Septic has a rating of 4.8 from 87 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 Bison Septic on (509) 554-6570. The business is at 17 Kirby Ct, Burbank, WA 99323, Kennewick, WA. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.