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, will be constructed to protect local waterways by addressing aging infrastructure.


A new 5-minute video that provides an overview of the Clearwater Project including what the project is, why it is needed, and how it will be constructed.

Clearwater Project Video



April 16, 2021
Launch Event for Clearwater Tunneling Machine

Yesterday, we hosted a virtual event to unveil the Clearwater Project tunneling machine and recognize the student finalists of our TBM naming and art contests. The event featured several distinguished speakers and provided an opportunity to see the tunneling machine before it is lowered below ground to start tunneling. Click here for photos of the event.

February 8, 2021
Construction Update to Public

On January 30th, we provided a virtual construction update on the Clearwater Project. The presentation is available on YouTube at

January 19, 2021
Construction Update on January 30

We will be providing an update on Clearwater Project construction on Saturday, January 30 at 9:30 a.m. Join us via Zoom (Meeting ID 845 0098 5681) to learn about what's been constructed over the last year and what is scheduled for this year.

December 28, 2020
Contest Winners Announced

We are pleased to announce the winners of our tunnel boring machine (TBM) naming and art contests. For the TBM naming contest, students submitted original essays that explained the significance of their proposed name and its importance to the community. more

November 5, 2020
Peninsula Veterans Group

On November 4, we provided an update on construction of the Clearwater Project to the Peninsula Veterans Group. We discussed the access shaft, underground concrete "maintenance blocks", and how the tunnel boring machine (TBM) works. more

October 21, 2020
Rotary Club of South Gate

On October 21, we provided an overview of the Clearwater Project and a construction update. We also mentioned the tunnel boring machine (TBM) naming and art contests that are open to all students in Los Angeles County. more

October 13, 2020
Northwest San Pedro Neighborhood Council

On October 13, we provided a construction update to the Northwest San Pedro Neighborhood Council. We showed video clips of the shaft construction taking place at the Joint Water Pollution Control Plant in Carson. more

September 17, 2020
Rotary Club of San Pedro

On September 17, we provided a construction update on the Clearwater Project to the Rotary Club of San Pedro. We covered the shaft construction, the underground concrete (maintenance) blocks being created at three locations along the tunnel alignment and how the tunnel boring machine builds the tunnel as it digs. more

September 10, 2020
Palos Verdes Chamber of Commerce

On September 10, we provided a brief overview and a construction update on the Clearwater Project. We showed the construction of the shaft that will be used to lower the tunnel boring machine (TBM) to its starting depth. more