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Please email us at the addresses below and we will reply within 1-2 business days.

Main Engineering Office
1685 Main Street, Mail Stop 15
Santa Monica, CA 90401

Engineering Permit Center
1685 Main Street, City Hall East 1st Floor
Santa Monica, CA 90401

Street Services
2500 Michigan Avenue
Santa Monica, CA 90404

Mon – Thurs, 8 AM to 5 PM
Alternating Fridays, 8 AM to 5 PM
Click here to see which Fridays City Hall is open




Go Santa Monica

City Groundwater Well Fields

The Santa Monica Water Treatment Plant treats water from three City groundwater well fields – Charnock, Olympic and Arcadia – to provide 8½ million gallons of drinking water each day to its 89,000 residents. With the Plant upgrade to state-of-the-art technology -- Reverse Osmosis -- the City is ensured of additional water quality benefits and added protection against potential pollution in the future.

Charnock Unit
Charnock Well Field Site
11375 Westminister Ave
Los Angeles, CA

Arcadia Unit
Santa Monica Water Treatment Plant
1228 S. Bundy Drive
Los Angeles, CA

City of Santa Monica © 2021

1685 Main St, Santa Monica, CA 90401