Secure Payment Gateway

In need of a septic system designer in Western Washington? Call for a consultation!

Call Direct (425) 248-1140

Current Licenses

Washington State Designer License #5100253
King County Master Installer: #MI142
King County On-site System Maintainer OSM #M42

Davis Septic Design: Professional Septic Design you can trust!

We are a Washington State licensed septic design company with a sterling reputation for excellent service for over 25 years. We take great pride in providing timely and cost effective “Service with a Smile.”