Tag Archive for: Desalination

How San Diego County’s Water Conservation Efforts Have Prepared Them for Severe Drought Conditions

/in , , /by /ABC 7 Los Angeles by Reporter: Phillip Palmer and Videographer Darryl Kim Quoted: San Diego County Water Authority

California will soak up some much needed rain this week on the heels of a sobering decision from the state to drastically reduce water distribution to the Los Angeles area due to our ongoing drought.

Meanwhile, the San Diego County Water Authority gets less than 1% of its water from the state, a remarkable difference from the 95% the agency received from the Metropolitan Water District of Southern California in the early 1990s. Conservation became a way of life in San Diego. Water use per day has been reduced by 50% since 1990 and remains consistent with levels seen during our last drought between 2012 and 2016.

Conservation a way of life in San Diego County

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10 Minutes With Sandra Kerl

/in , , /by /BC WaterNews (Brown and Caldwell)by Wendy Broley and Mike Puccio Quoted: San Diego County Water Authority

San Diego County Water Authority General Manager Sandra Kerl recently sat down with Brown and Caldwell’s Wendy Broley, director of technical practices, and Mike Puccio, Southern California operations director, to talk about her experience dealing with unprecedented challenges, including the COVID-19 pandemic, wildfires, and drought.

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10 Minutes With Sandra Kerl

/in , , /by /Brown and Caldwellby Wendy Broley and Mike Puccio Quoted: San Diego County Water Authority

San Diego County Water Authority General Manager Sandra Kerl recently sat down with Brown and Caldwell’s Wendy Broley, director of technical practices, and Mike Puccio, Southern California operations director, to talk about her experience dealing with unprecedented challenges, including the COVID-19 pandemic, wildfires, and drought.

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Camarillo Doubles Potable Water Supply with New Desalination Plant

/in , , /by /WaterWorld Magazine

The city of Camarillo, Calif. has announced the start-up and commissioning of its North Pleasant Valley Groundwater Desalter Plant, moving the city closer to a more self-reliant potable water future.

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Opinion: California Should Create More Water – Much More

/in , /by /CalMattersby Jim Wunderman

Wouldn’t you know it? Just like washing your car, almost the moment I finished writing this article, the skies opened up.

I’d write one every day if it meant ending our water woes. But it tells you everything you need to know about California’s dire water situation – that the atmospheric river that recently pummeled Northern California and other parts of the state doesn’t even begin to make a dent in our drought.

And it highlights the urgency for California to create more water. Much more.

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Water Shortage Contingency Plan-Drought-WSCP-Water Authority

Water Authority Activates Water Shortage Contingency Plan

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The San Diego County Water Authority today activated Level 1 – Voluntary Conservation of its Water Shortage Contingency Plan in support of Gov. Gavin Newsom’s efforts to sustain California after two record-dry years. The agency’s 36-member Board of Directors voted unanimously to activate the regional drought response plan for the third time this century.

The San Diego region continues to have reliable water supplies due to decades of conservation efforts and ratepayer investments. However, Water Authority Board Chair Gary Croucher said San Diegans should increase their conservation efforts in the face of a potential third dry year across California.

“San Diegans have always stepped up when duty calls,” Croucher said. “Today, our 36-member Board sends a unified message encouraging residents to conserve water, avoid water waste, and take advantage of rebates to improve water-use efficiency indoors and outdoors.”

Drought emergency declaration

On Oct. 19, Gov. Newsom extended his drought emergency declaration to cover the entire state and asked the State Water Board to ban wasteful water practices such as using potable water for washing driveways and sidewalks. In addition, the governor directed water suppliers to implement Water Shortage Contingency Plans, which are responsive to local supply-demand conditions.

Water Shortage Contingency Plan

The Water Authority’s Water Shortage Contingency Plan, or WSCP, is designed for situations in which the agency’s supplies have been reduced. Previous versions of the plan have been activated twice before – once in 2007 and again in 2014. While the region isn’t currently facing supply reductions, Croucher said the Board’s action to go to Level 1 sends a signal that increased voluntary conservation efforts are necessary, and it gives local retail water agencies flexibility to address local conditions. While the Water Authority’s WSCP Level 1 calls for 10% voluntary water savings, the agency is supporting the governor’s call for a 15% reduction.

WSCP Level 1 – WaterSmartSD

At Level 1, the Water Authority will continue and enhance regional outreach and education to promote conservation. The agency offers numerous tools to make the most of every drop at www.watersmartsd.org. Resources include:

  • Water-use efficient landscape classes for residential and professional landscapers
  • Rebates for indoor and outdoor water saving devices
  • Rebates for turf replacement
  • Water-use checkups for homes and businesses that include water-saving recommendations
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The Claude “Bud” Lewis Carlsbad Desalination Plant is the largest, most technologically-advanced and energy-efficient desalination plant in the nation. Photo: San Diego County Water Authority

Water supply reliability

The Water Authority is also developing a program to increase installation of low-flow toilets in low-income communities, and it’s looking for opportunities to help the parts of the state that are suffering from extreme water shortages. The Water Authority has groundwater stored in the Central Valley that could be exchanged or sold, and the Water Authority is seeking partners who could benefit from increasing water production at the Claude “Bud” Lewis Carlsbad Desalination Plant.

The Water Authority’s supply reliability is due to multiple factors, including the nation’s largest ag-to-urban conservation project which helps sustain the region’s $253 billion economy and the quality of life for 3.3 million people. In addition, the Water Authority developed the nation’s largest seawater desalination plant in Carlsbad, which provides 10% of the region’s water supply. Long-term conservation upgrades have also played a critical tole: the region’s per capita water use is down nearly 50% since 1990. San Diego County’s diversified water resources reduce pressure on the State Water Project and make more water available to other areas of the state hit hardest by drought.

Marin Desalination Prospects Fade in Favor of Imports

/in , /by /Marin Independent Journalby Will Houston

The Marin Municipal Water District is moving away from plans to acquire temporary desalination plants and instead is exploring purchasing more water from Sonoma County during the winter months.

“We are determining that this is really not a feasible approach for the current drought where winter water does seem promising,” Paul Sellier, the district operations director, told the board on Oct. 19.

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People Should Drink Way More Recycled Wastewater

/in , , /by /Wiredby Matt Simon

ON A DUSTY hilltop in San Diego, the drinking water of the future courses through a wildly complicated and very loud jumble of tanks, pipes, and cylinders. Here at the North City Water Reclamation Plant, very not-drinkable wastewater is turned into a liquid so pure it would actually wreak havoc on your body if you imbibed it without further treatment.

First the system hits the wastewater with ozone, which destroys bacteria and viruses. Then it pumps the water through filters packed with coal granules that trap organic solids. Next, the water passes through fine membranes that snag any remaining solids and microbes. “The pores are so small, you can’t see them except with a really powerful microscope,” says Amy Dorman, deputy director of Pure Water San Diego, the city’s initiative to reduce its reliance on water imported from afar. “Basically, they only allow the water molecules to get through.”

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

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CARLSBAD, Calif. (Oct. 7, 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.”

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Carlsbad Desalination Plant-oil spill-Lagoon-boom protection

Desal Plant Operations Continue; Protective Boom Installed at Lagoon

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(Editor’s note: As of Friday, October 8, the Carlsbad Desalination Plant continues operating at full production with no indication of oil in the feed water. As a precautionary measure, protective booms have been placed at several locations in the Aqua Hedionda Lagoon, including in front of the desalination plant intake).

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.

No oil detected

“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.”

Drought-proof water supply

The Water Authority added desalinated seawater to its supply portfolio in 2015 with the start of commercial operations at the nation’s largest seawater desalination plant – the result of a public-private partnership in the coastal town of Carlsbad. The drought-proof supply reduces the region’s dependence on supplies that are vulnerable to droughts, natural disasters and regulatory restrictions.

Desalination uses reverse osmosis technology to separate water molecules from seawater. Water from the ocean is forced through thousands of tightly-wrapped, semipermeable membranes under very high pressure. The membranes allow the smaller water molecules to pass through, leaving salt and other impurities behind.

Landmark public-private partnership

In November 2012, the Water Authority approved a 30-year Water Purchase Agreement with Poseidon Water for the purchase of up to 56,000 acre-feet of desalinated seawater per year, approximately 10% of the San Diego region’s water demand.

Poseidon is a private, investor-owned company that develops water and wastewater infrastructure. Under the Water Purchase Agreement, Poseidon built the Claude “Bud” Lewis Carlsbad Desalination Plant, and a 10-mile conveyance pipeline to deliver desalinated seawater to the Water Authority’s aqueduct system.

For updates on the oil spill go to: https://socalspillresponse.com