Desal Plant Operations Continue as State Starts to Install Barriers at Lagoon

October 07, 2021

Poseidon Water and the San Diego County Water Authority issued the following joint statement in response to emergency response efforts following the recent oil spill off the coast of Orange County. No oil has been detected by the plant’s monitoring system.

“The San Diego County Water Authority and Poseidon Water appreciate precautionary efforts by state emergency response crews to install a protective boom at the mouth of Agua Hedionda Lagoon, which provides intake water for the Claude “Bud” Lewis Carlsbad Desalination Plant. State agencies are also installing a second barrier near the plant intake.

“The Carlsbad Desalination Plant continues to operate normally with no oil detected at the site, and there are no plans to shut it down. If operational changes are required, the Water Authority could shift water deliveries to ensure continued water service to its member agencies countywide. Per State of California requirements in the facility’s drinking water permit, the desalination plant will shut down if the hydrocarbon concentration of source seawater reaches 300 parts per billion.

“We continue to monitor the situation closely, including ongoing testing for oil in the intake waters of the desal plant. And we continue to closely coordinate with the City of Carlsbad, the County of San Diego, Orange County, state agencies and others involved in the emergency response to ensure the plant remains a vital, drought-proof water source for San Diego County.”

  • The San Diego County Water Authority sustains a $268 billion regional economy and the quality of life for 3.3 million residents through a multi-decade water supply diversification plan, major infrastructure investments and forward-thinking policies that promote fiscal and environmental responsibility. A public agency created in 1944, the Water Authority delivers wholesale water supplies to 23 retail water providers, including cities, special districts and a military base.

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