thumbnail of Fact Sheet_WESTERN TRUNK LINE 12-3-19

The Western Trunk Line is a large diameter pipeline that provides potable water to city residents in the South Los Angeles and Harbor communities.

As part of the Western Trunk Line Project, LADWP will replace approximately a four mile segment of the existing 31 to 36-inch pipeline which was installed between 1916 and 1947. The pipeline will be replaced with new 36-inch and 54-inch diameter earthquake resistant ductile iron pipe (ERDIP).

The four mile construction route begins at Western Avenue at 59th Place and extends south to Western Avenue and 121st Street.

The construction timeline is 2023-2027.