Lessons Learned in San Diego's Collection System Assessment Program

The City of San Diego has embarked on a ten-year program to reduce sanitary sewer overflows (SSOs) in its 2,900-mile collection system by replacing, rehabilitating and repairing sewer pipes that are susceptible to overflows. An important component of this program is a plan for inspection and condition assessment of the City's sewer assets. The City has scheduled closed-circuit television (CCTV) inspection for approximately 1,200 miles of pipe, as well as detailed inspections for approximately 26,000 manholes. At approximately the midpoint of the inspection program, the City is able to report on the successes and the challenges of its inspection program.