The Clearwater Project was approved after a multi-year evaluation of the main sewer system serving nearly half of Los Angeles County. A new 7-mile tunnel, a key component of the project, is being constructed to protect local waterways by addressing aging infrastructure.
Take an up-close look at how Rachel, our tunnel boring machine (TBM), works. In this short video, we explain how the parts of the TBM work.
This 5-minute video provides an overview of the Clearwater Project including what the project is, why it is needed, and how it is constructed.
December 18, 2025
Crews have been authorized to continue drilling on Saturday, December 20 from 9 am to 3pm.
December 10, 2025
Please read the following update regarding re-entry to the Clearwater Project tunnel. Click here to read more.
November 24, 2025
Please click here to read the following update on the Clearwater Project.
