Based in Walnut Creek, a crew from Collection Systems Operations
(CSO) can reach the site of a sewer overflow anywhere in the
Central San service area in 30 minutes or less.
Along with emergency response, CSO is responsible for the
cleaning, maintenance, and repair of the over 1,540 miles of
underground pipeline that makes up the Central San’s sewer
system. These pipes range in size from 6 inches to 102 inches in
diameter. Maintaining this system is an ongoing process involving
approximately 60 employees.
Visit the Sewer System
section on this site for more information.
