Construction on the new East County Advanced Water Purification facility is well underway. When completed, it will turn 15 million gallons of wastewater into purified water for people in Lakeside, Santee, El Cajon and the surrounding areas.
Orange County is home to the world’s largest water purification system for indirect potable reuse—and it’s only getting bigger. The Groundwater Replenishment System, a joint project between Orange County Water District and Orange County Sanitation District, just finished its final expansion. We spoke to OCWD General Manager Mike Markus and the group’s recent president, Steve Sheldon, to learn more about this revolutionary facility.
The Claude “Bud” Lewis Carlsbad Desalination Plant has served more than 100 billion gallons of high-quality, locally controlled water over the past seven years – a milestone passed in late October, as California entered a fourth consecutive year of severe drought.
The plant produces an average of more than 50 million gallons of high-quality, locally controlled water every day. It’s a foundational water supply for the San Diego region that minimizes vulnerability to drought and other water supply emergencies. The facility is the largest, most technologically advanced and energy-efficient desalination plant in the nation, and it has provided a sustainable water supply to residents and businesses in San Diego County since December 2015.
“As we mark this achievement, water from the seawater desalination plant continues to reduce our dependence on imported water sources, which has the effect of making more water available for drought-stricken communities elsewhere,” said Mel Katz, Board chair for the San Diego County Water Authority. “Since coming online in 2015, the Carlsbad Desalination Plant has met nearly 10% of the region’s water demand, and it will be a core water resource for decades to come.”
The San Diego County 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. Photo: San Diego County Water Authority
“Reaching 100 billion gallons demonstrates the value, effectiveness, and reliability of the desalination plant, as it produces high-quality water to help meet the needs of the region’s residents and businesses,” said Channelside President, Sachin Chawla.
The desalination plant is a key piece of the region’s multi-decade strategy to diversify its water supply portfolio. A 30-year Water Purchase Agreement between Poseidon (Channelside) LP and the Water Authority allows for the production of up to 56,000 acre-feet of water per year, enough to meet the needs of approximately 400,000 people.
Reverse osmosis is the heart of the Carlsbad Desalination Plant. During this process, dissolved salt and other minerals are separated from the water, making it fit for consumption. This reverse osmosis building contains more than 2,000 pressure vessels housing more than 16,000 reverse osmosis membranes. Photo: San Diego County Water Authority
Desalination uses reverse osmosis technology to remove water molecules from seawater. Water from the ocean is forced through tightly-wrapped, semipermeable membranes under very high pressure. The membranes allow the smaller water molecules to pass through, leaving salt and other impurities to be discharged from the facility.
More information about the desalination plant is at carlsbaddesal.com and sdcwa.org.
In late January, the EMWD (Eastern Municipal Water District) was awarded nearly $4.5 million by the U.S. Army Corps of Engineers.
The funds will go towards the water district’s desalination infrastructure. Kevin Pearson is a spokesperson with the EMWD. “EMWD has a portion of its service area that has a salty groundwater basin, it’s naturally occurring, it has a higher salt contents than drinking water standards,” said Pearson.
Pearson says the water district uses reverse osmosis to purify the water and also discussed the award’s significance. The funds will go towards a study on future well sites and improvements to pipeline access.
Construction of Escondido’s $65 million Membrane Filtration Reverse Osmosis Facility for Agriculture commenced recently, marking a milestone in the City’s goal of providing agriculture growers a high-quality irrigation supply and easing the burden on its wastewater infrastructure.
Pure Water Oceanside construction remains on schedule for completion in 2022, with several significant milestones recently completed. The Oceanside project will purify recycled water to create a new, local source of high-quality drinking water that is safe, drought-proof and environmentally sound.
“Construction has impacted many residents and businesses,” said Cari Dale, City of Oceanside water utilities director. “Please know the City of Oceanside appreciates your patience. We thank people for understanding the need for this project and bearing with us during these months of construction impacts. This work is temporary, but the benefits will last for generations.”
Now under construction, the project will purify recycled water to create a new, local source of high-quality drinking water that is safe, drought-proof and environmentally sound. Photo: Jeremy Kemp/City of Oceanside
The foundational work on the facility located in the San Luis Rey Water Reclamation Facility is complete. Pipelines, electrical conduits, equipment pads/pedestals, and wet wells have been constructed. Prefabricated walls have been installed. Installing the roof and additional wall stabilizing are next on the schedule.
The water purification equipment including pumps, membrane filters, and reverse osmosis canisters are currently being manufactured. Delivery is anticipated between this summer and fall.
Work on the south side of Coco Palms Drive near the El Camino Real intersection begins this month. Parking in the area will be closed during this work period with “no parking” signs posted. Graphic: City of Oceanside
The two injection wells on Coco Palms Drive are complete. Sound walls will be removed. Construction on two planned monitoring wells is anticipated to begin within the next two months. Sound walls will be installed prior to extended hours construction into evenings and weekends to reduce the impact on the community.
Coco Palms Drive will continue to be closed for the next few months while pipeline construction is underway.
Work on the south side of Coco Palms Drive near the El Camino Real intersection begins this month. Parking in the area will be closed during this work period with “no parking” signs posted.
Monitoring well work in Fireside Park will take place primarily during the daytime, with possible evening and weekend work for critical activities. Sound walls will be installed to reduce noise. Drilling and development is estimated to take six weeks.
An overhead look at pipeline installation along Douglas Drive in Oceanside for Pure Water Oceanside. Photo: Jeremy Kemp/City of Oceanside
Pipeline installation work will begin soon to install recycled water pipelines under El Camino Real. Traffic delays are expected and alternative routes are suggested.
Cones will be set up in work zones to redirect traffic from closed lanes and flagger workers will help drivers safely navigate intersections. Regular working hours will be Monday through Friday, 7 a.m. to 5 p.m. with occasional work on Saturdays.
Work at the Mission Avenue and El Camino Real intersection will be at night to reduce commuter traffic impacts. Work hours will be from 8 p.m. to 4 a.m.
Construction personnel guide reverse osmosis skids into place. Photo: Jeremy Kemp/City of Oceanside
Approximately 90% of Oceanside’s drinking water is imported. Pure Water Oceanside will create three to five million gallons of drinking water each day, enough water to provide 32% of the City of Oceanside’s water supply.
The water purification process uses reverse osmosis and advanced oxidation to create safe drinking water. The technology removes pharmaceuticals, chemicals, hormones, microplastics, and personal care products.
The project protects sensitive ecosystems by reducing the amount of water siphoned by imported water sources. It decreases the amount of recycled water discharged into the ocean, and uses half the energy needed to transport imported water, reducing greenhouse gas emissions.
Residents are kept up to date on construction impacts to streets and other infrastructure through several outreach efforts including an interactive construction map, detailed online schedule, regular newsletters, and virtual open house presentations live on the City of Oceanside’s YouTube channel, offering residents the opportunity to ask questions.
In places like San Diego and Dubai, where freshwater is scarce, humans turn to machines that pull the salt out of seawater, transforming it into clean drinking water.
Escondido is moving forward on a reverse osmosis treatment facility that will reduce the city’s wastewater and also provide more recycled water for agricultural use. The project will divert millions of gallons of water from the discharge pipeline, and turn it into highly treated irrigation water. It’s expected to begin construction in early 2020 and come online in December, 2021. “This will not only generate a new supply of water to farmers that is economically viable to them, but it also will save our wastewater customers an enormous amount of money,” said Director of Utilities, Christopher McKinney.
The Water News Network is San Diego County’s source for water news and information.
