The Sanitation Districts are a partnership of 23 independent special districts that serve the wastewater and solid waste management needs of approximately 5.7 million people in Los Angeles County (County). The Sanitation Districts' service area covers approximately 820 square miles and encompasses 78 cities and unincorporated territory within the County. Within the Sanitation Districts' service area, there are approximately 9,500 miles of sewers that are owned and operated by the cities and County that are tributary to the Sanitation Districts' wastewater collection system. The Sanitation Districts own, operate, and maintain approximately 1,400 miles of sewers - ranging from 8 to 144 inches in diameter - that convey approximately 500 million gallons per day of wastewater to 11 wastewater treatment plants. Included in the Sanitation Districts' wastewater collection system are 51 active pumping plants located throughout the County. The Sanitation Districts' service area includes wastewater collection systems located within the Joint Outfall System, the Santa Clarita Valley and the Antelope Valley.
Joint Outfall Collection System
The Sanitation Districts maintain a Wastewater Collection System Operation and Maintenance Program consisting of the following elements:
Computerized Work and Asset Management (WAM) System
Geographical Information System
The SSMP includes a Sanitary Sewer Overflow Response Plan (SSORP). To obtain a copy of the SSMP on CD, please contact
Anthony Howard via the email link or at (310) 638-1161, extension 6806.
Operation and Maintenance Programs
Odor and Corrosion Control Programs
Condition and Capacity Assessment Programs
Santa Clarita Valley Collection System
The Santa Clarita Valley Sanitation District owns, operates, and maintains the wastewater conveyance system for the Santa Clarita Valley which consists of a 34-mile long, interconnected network of trunk sewers and two pumping plants. The system conveys wastewater and wastewater solids from the local sewer lines to the Saugus and Valencia Water Reclamation Plants. Local lines are sewers that, typically, convey wastewater from a user's property line to the trunk sewers.
The City of Santa Clarita owns the local sewers within its borders, and Los Angeles County owns the majority of the local sewers located in unincorporated areas. The Los Angeles County Consolidated Sewer Maintenance District operates and maintains these local sewers.
Antelope Valley Collection System
The wastewater conveyance system for the Antelope Valley consists of a network of trunk sewers and local sewers serving the Palmdale and Lancaster service area. Approximately 40 miles of interconnected trunk sewers convey wastewater generated within Palmdale to the Palmdale Water Reclamation Plant and approximately 64 miles of trunk sewers convey wastewater generated within Lancaster to the Lancaster Water Reclamation Plant. All trunk sewers convey wastewater by gravity flow and, therefore, no pumping plants are necessary.
The cities of Palmdale and Lancaster own and maintain the local sewers within their respective city limit borders and Los Angeles County owns the majority of the local sewers in unincorporated areas. The Los Angeles County Consolidated Sewer Maintenance District operates and maintains the local sewers within the unincorporated service areas.
In the event of a sewage related overflow, emergency, or odor problem, contact:
Sanitation Districts of Los Angeles County
24-Hour Emergency Hotline
(562) 437-6520
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