Sanitation Districts of LA County


The Sanitation Districts of Los Angeles County protect public health and the environment through innovative and cost-effective wastewater and solid waste management and in doing so, convert waste into resources such as recycled water, energy, and recycled materials.

Formed in 1923, the Sanitation Districts function on a regional scale and consist of 23 independent special districts serving about 5.4 million people in Los Angeles County.  The Districts work cooperatively under a Joint Administration Agreement with one administrative staff headquartered near the city of Whittier. The Sanitation Districts are leaders in the production of green energy and the recycling of water and materials.

Wastewater Management
The Sanitation Districts treat about half the wastewater in Los Angeles County.  We are pioneers in using recycled water beneficially and remain strong proponents of expanding reuse options.  Our water reclamation facilities produce high-quality recycled water that essentially meets drinking water standards and is reused at more than 700 sites throughout the county.

Solid Waste Management
The Sanitation Districts operate a comprehensive solid waste management system serving the needs of a large portion of Los Angeles County.  Our system includes sanitary landfills, recycle centers, materials recovery/transfer facilities, and energy recovery facilities.  The Sanitation Districts have taken the lead role in implementing a Waste-by-Rail system for Los Angeles County to transport waste to distant disposal facilities by train.  This innovative system will provide long-term disposal capacity to replace local landfills as they reach capacity and close.

Energy Recovery
Over 120 megawatts of electricity are generated in Sanitation Districts’ wastewater and solid waste operations.  In total, we produce power equivalent to the needs of about 160,000 Southern California homes.  Many of the technologies used were pioneered at Sanitation Districts’ facilities.