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Los Alamos Hills Water Facilities Project

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Los Alamos Hills Water Facilities Project

Los Alamos Hills Water Facilities Project Fact Sheet

Project Description: This project is located in Murrieta near Los Alamos and Mary Place. The project scope has been updated as of 01/18/2023 to include 36 residences that rely solely on privately owned wells for their water supply.  The City of Murrieta secured $3 million in American Rescue Plan Act (ARPA) funding and is working in partnership with EMWD to support the construction of water infrastructure for annexed residents in the Los Alamos Hills community.  The project includes installation of approximately 6,720 linear feet of 8-inch diameter pipeline, 4,040 linear feet of 12-inch diameter pipeline, and related auxiliary work.

Project Location: The proposed project would be a looped water system and would serve approximately 36 properties within the community that fronts Los Alamos Road, Celia Road, Mary Place, and Mason Road.

March 22, 2024 – Pipeline Excavation 

 On March 21, 2024, EMWD’s construction consultant, SEMA Construction, Inc., distributed door hangers to residents on Celia Road for the upcoming pipeline excavation activities.  This work will begin on March 27, 2024.  Utility potholing continues throughout the area. 

February 15, 2024 – Construction Commencement

EMWD’s Board of Directors awarded the Los Alamos Hills Water Facilities Project to SEMA Construction, Inc. In the coming weeks (weather permitting), SEMA will begin utility potholing, surveying and pre-construction video in anticipation of breaking ground. EMWD appreciates your patience and understanding as we work to complete this important project. If there are questions about the project, please email Roxanne at 

December 8, 2023 Update

On December 6, 2023, EMWD’s Board of Director’s approved and authorized an award contract with SEMA Construction, Inc. and Converse Consultants for the construction of the project. More details to follow. 

November 17, 2023 Update

EMWD has received construction bids for the Los Alamos Hills Water Facilities Project.  These bids are being reviewed and will go to our Board of Directors Meeting on December 6, 2023, for approval. 

July 11, 2023 Metropolitan Water District (MWD) Annexation Board Approval

On July 11, 2023, MWD adopted a resolution to approve the 114th fringe area annexation to EMWD/MWD for the Los Alamos Hills Community. 

Click the link on the right to view MWD’s Board of Directors presentation.


NOTARY MEETING: January 10, 2023 

Project Presentation: 5:30 p.m. Notary Signing: 6 p.m. – 7:30 p.m.

Location: Alderwood Clubhouse 28610 Baxter Road, Murrieta CA 92563

EMWD Public Hearing Presentation 12.07.22

Public Hearing Presentation 12.07.22

Los Alamos Hills Town Hall Presentation 10.13.22

Town Hall Presentation

Los Alamos Hills Acreage Map 

Los Alamos Hills Acre Map

Los Alamos Hills Looped System Map

Los Alamos Hills Looped System Map

Project Contact Information:
Roxanne Rountree
Public Affairs Manager
951-928-3777, ext. 4391

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