Hetch Hetchy Reservoir. (Dan Schreiber/S.F. Examiner file photo)

Hetch Hetchy Reservoir. (Dan Schreiber/S.F. Examiner file photo)

No threat to SF drinking water from wildfire

The San Francisco Public Utilities Commission is ready to switch its water operations from the Hetch Hetchy Regional Water System to Bay Area water supplies should a wildfire that began burning Monday in Tuolumne County take a turn for the worse.

The Marshes Fire started around 12:15 p.m. off state Highway 49 at Marches Flat Road, north of Don Pedro Reservoir and about an hour’s driving distance from the Hetch Hetchy Reservoir, which supplies drinking water to San Francisco.

No interruptions or impacts to water quality or water deliveries from the Hetch Hetchy Regional Water System have occurred due to the fire.

However, the wildfire is burning near near the town of Moccasin, where the Sierra headquarters of the Hetch Hetchy Regional Water System is located, public utilities officials said.

“Normal hydroelectric power generation and deliveries also continue without interruption,” the public utilities commission said in a statement Tuesday. “As a precautionary measure, the San Francisco Public Utilities Commission (SFPUC) is prepared to switch to local Bay Area water supplies should the situation warrant it.”

The Marshes Fire had burned 930 acres as of 8:30 a.m. Tuesday, according to Cal Fire. Mandatory evacuations for the Moccasin Estates subdivision have been issued.Hetchy HetchySFPUCTuolumne CountyWildlife

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