Development and Deployment of a Real-Time Remote Continuous Monitoring System for Manholes

A new system for the detection of septic sewer overflows (SSOs) and unauthorized intrusions of manholes has been developed jointly with public water agencies in San Diego County, California. The goal of the project is to provide detection of SSOs early enough to deploy personnel to provide preventative action. The system has been in operation since May of 2005 and has detected and, with field staff intervention, prevented several SSOs. In addition the system has detected unauthorized intrusions which resulted in effective response by water district staff. The system is also intended to be economical enough to be affordable for wide deployment. The deployment and results of multiple field installations are described in detail.