Septic system contractor. We are well established Septic System Contractors doing business as far back as 1989. We are based in Langley doing Septic System Sales, delivery and installations in Richmond, Surrey, Langley and the Vancouver area and as far away as Revelstoke, Whistler and the Sunshine Coast. Western Sep-Tech Systems is the leading source for all your septic system installationrequirements. more... See more text