The Pulgas Water Temple is a stone structure in Redwood City, California, United States, designed by architect William G. Merchant.

It was erected by the San Francisco Water Department to commemorate the 1934 completion of the Hetch Hetchy Aqueduct and is located at the aqueduct's terminus; originally water flowed through a vault under the temple itself, but new requirements for treatment require it to be diverted to a plant nearby.

The grant was named as such because the main village of the Lamchin, the Ohlone tribe living in the San Carlos area before the Spanish settlers arrived, was called, "Cachanigtac."

[1][2] Designed by architect William Merchant and with carving by Albert Bernasconi, it consists of a circle of fluted Corinthian columns surmounted by a large masonry ring bearing the inscription "I give waters in the wilderness and rivers in the desert, to give drink to my people" [from Isaiah 43:20].

Members of the expedition were the first Europeans to explore inland areas of California, and the first to see San Francisco Bay.