LA SEWERS


CITY OF LOS ANGELES
DEPARTMENT OF PUBLIC WORKS

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ABOUT THE CITY'S SEWER SYSTEM
  Sewer System Management Plans
  How the sewer system works
  Maintenance: how we keep sewers working
  How we build and repair sewers
  Collection System Settlement Agreement
SEWER CONSTRUCTION PROJECTS
TREE ROOTS
FATS, OIL AND GREASE PROGRAM
SPILLS & BACKWATER VALVES
ODORS
HELP PROTECT THE ENVIRONMENT
FAQS

City Sewers

About the City’s Sewer System

Los Angeles operates and maintains the largest wastewater collection system in the United States. It serves a population of more than four million within a 600 square mile service area that includes Los Angeles and 29 contracting cities and agencies. The City's more than 6,700 miles miles of public sewers convey about 400 million gallons per day of flow from residences and businesses to the City's four wastewater treatment and water reclamation plants. Information on how the City manages its vast sewer system may be obtained in the Sewer System Management Plan (SSMP).

Most sewers are in good working order but some are being repaired or replaced, as part of the 10-year LA Sewers Program and the Collection System Settlement Agreement (CSSA).  The CSSA is a legal agreement that defines the maintenance and construction projects and schedules. These include sewers that are very old, seriously deteriorating, or too small for the area they serve. The City has developed rigorous maintenance and construction programs to keep our sewers in reliable condition.


LA Major Interceptor/Relief Sewers
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Map - click to view large
CONTACT AND INFORMATION
 To report sewer ODORS, click HERE or call (800) 773-2489
 To report sewer SPILLS, call (800) 773-2489
For other questions, call (213) 978-0333
or email bpw.pao@lacity.org
City of Los AngelesDepartment of Public Works
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