Sewer Connection September 13, 2018February 27, 2019 Contact Info Name Cathy Phone (800) 655-7473 Address 5017 Appian Way El Sobrante, CA 94803 Website https://sewerconnectioninc.wixsite.com/website Sewer Connection We take pride in offering Trenchless Sewer Lateral replacement in the Bay Area for over 20 years. Servicing Contra Costa County & Marin County .