Cupertino Sanitary District (CuSD) has been serving the community for over 50 years, providing service to over 23,000 customers within the communities of Cupertino, portions of Saratoga, Sunnyvale, Los Altos and unincorporated areas within Santa Clara County.

CuSD covers approximately 15 square miles, serving a population of over 50,000 people with more than 23,000 residential and business units. the District owns and manages over 1 million lineal feet of sewer mains, 0.5 million lineal feet of sewer laterals, 17 pump stations, 4000 manholes and flushing inlets, and one equipment storage facility. CuSD conveys nearly 5 million gallons of waste-water daily from its customers for treatment at the San Jose/Santa Clara Water Pollution Control Plant.

CuSD's collection system, much of which is more than 40 years old, has been maintained proactively with regular cleaning and development of a Capital Improvement Program (CIP) aimed at improving efficiency as well as extending its useful service life.