San Diego County Water Authority crews recently replaced two pickup truck-sized valves at the agency’s Pressure Control and Hydroelectric Facility in central San Diego – each valve weighing about 35,000 pounds.
The replacement project took place during a scheduled shutdown of a portion of Pipeline 5, which delivers untreated water throughout the county. The pressure-control facility is a key piece of the Emergency and Carryover Storage Project, which ensures water is available around the region if imported water deliveries are disrupted.
Several large-diameter valves in the facility control the pressure and quantity of water delivered to reservoirs and water treatment plants in eastern and southern parts of the county. In addition, a hydroelectric turbine in the facility generates supplemental electricity that reduces the Water Authority’s energy costs while supplying surplus power to the region.
Facility upgrades for infrastructure efficiency
“The new valves will allow the facility to function efficiently at both low and high water flows, depending on regional demand,” said Kirk Whitaker, a senior engineer at the Water Authority. “The project is part of ongoing improvements that enhance the flexibility of our regional water delivery system.”
To perform the valve replacement, a large crane lifted the existing valves out of the facility through the roof and placed them onto flatbed trucks for delivery to a disposal and recycling site. The new valves were then lowered into the facility through the roof and fitted with new 42-inch pipeline sections. Concrete was poured to build pedestals that secure the valves in place.
The new valves were produced in Germany and transported to San Diego by ship. The valve installation process took four days to complete.
Enhancing regional aqueduct operations
The Pressure Control and Hydroelectric Facility serves an important function in improving aqueduct operations and enhancing the flexibility of the Water Authority’s extensive water delivery system. The $21 million facility was completed in 2007 and pressurizes a 22-mile-long section of the Water Authority’s large-diameter Pipeline 5 between San Marcos and Mira Mesa.
The pipeline previously conveyed water in one direction only, from north to south, by gravity. This limited the Water Authority’s ability to move water around the county in the event of a supply disruption. Upgrades to Pipeline 5 now allow water to be transported either north or south using water stored at San Vicente Reservoir, which greatly improves pipeline operations and ensures that water can continue flowing to member agencies.
https://www.waternewsnetwork.com/wp-content/uploads/2021/03/Valves.03.09.2021x014-845x450-1-scaled-e1616531659413.jpg450845Kristiene Gonghttps://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.pngKristiene Gong2021-03-23 16:14:572021-03-26 07:22:03Heavy Metal: Facility Upgrades Enhance Flexibility of Regional Water System
The San Diego County Water Authority’s draft 2020 Urban Water Management Plan was released for public review today. The plan highlights how regional investments in a “water portfolio approach” to supply management and a sustained emphasis on water-use efficiency mean that San Diego County will continue to have sufficient water supplies through the 2045 planning horizon — even during multiple dry years.
A 60-day public comment period on the draft plan ends May 6 and will include a public hearing on March 25. The Board of Directors is expected to consider adoption of the final plan during its regular meeting on May 27. The 2020 UWMP is due to the state by July 1, 2021. To read the draft 2020 Urban Water Management Plan, or to submit comments, go to http://bit.ly/Water-Authority-UWMP.
Regional investments pay off for water supply
“Thanks to decades of regional investments, the draft plan shows that we don’t need to secure more regional supply sources for the foreseeable future,” said Water Authority General Manager Sandra L. Kerl. “Instead, we are focused on helping our member agencies develop local supplies and looking for other ways we can continue to ensure supply reliability at a reasonable cost.”
The Water Authority started the current UWMP process in September 2018, coordinating closely with its 24 member agencies, most of which must submit their own plans to the state. Member agencies provided input into the draft plan as part of the Water Authority’s ongoing effort to align local and regional projections as closely as possible. The plan’s long-range demand forecast shows an increase in regional demands of less than 1% per year through 2045. This change in demand is consistent with the change forecasted by other large water suppliers, including the City of San Diego and the Metropolitan Water District of Southern California.
Plan is mandated by state law
Multiple supply and demand projections factor into Urban Water Management Plans, which are mandated by the state to ensure sufficient supplies over 25 years. The plans are not used to set water rates; rates are set annually based on multiple financial factors at the time, not long-term projections about water supplies.
Urban Water Management Plans are dictated by statutory guidelines, Water Authority Board direction and an agreement with the San Diego Association of Governments to use its regional growth forecast. The plans also support state laws that link approval for large housing developments to water supply availability.
By law, the plans must be updated every five years. Per state guidelines, the Water Authority’s Urban Water Management Plan includes:
Projected water demands under normal weather and dry weather scenarios
Conservation savings information
A process to conduct an annual water supply and demand assessment
Supply reliability analysis
The demand forecast accounts for changes in socio-economic factors, such as the number of projected housing units, the mix of single-family and multi-family dwellings, and employment growth.
Conservation by water ratepayers in San Diego County
Conservation projections account for continued adoption of water-use efficiency measures, compliance with landscape water-use ordinances for new residential construction, and continued installations of sustainable landscapes at existing homes. Since 1991, San Diego County ratepayers have conserved more than 1 million acre-feet of water, and per capita potable water use in the region decreased nearly 60% between fiscal years 1990 and 2019.
The draft 2020 Urban Water Management Plan shows how regional investments by the San Diego County Water Authority in a “water portfolio approach” mean that San Diego County will continue to have sufficient supplies, including locally-controlled drinking water from the Claude “Bud” Lewis Carlsbad Desalination Plant, the largest, most technologically-advanced and energy efficient desalination plant in the nation. Photo: San Diego County Water Authority
The draft 2020 UWMP also highlights the value of the Water Authority’s long-term strategy to invest in highly reliable and locally controlled supplies from the Claude “Bud” Lewis Carlsbad Desalination Plant and the nation’s largest conservation-and-transfer agreement, which provides high-priority, low-cost water from the Colorado River.
In addition to the UWMP, the Water Authority also regularly updates its Regional Water Facilities Optimization and Master Plan, which focuses on the infrastructure necessary to meet projected long-term demands, and its Long-Range Financing Plan. Those documents work together to ensure the right mix of supplies and facilities to meet the region’s needs at an affordable cost.
The draft 2020 Urban Water Management Plan highlights the value of the Water Authority’s long-term strategy to invest in highly reliable supplies, including the nation’s largest conservation-and-transfer agreement, which provides high-priority, low-cost water from the Colorado River. Photo: San Diego County Water Authority
https://www.waternewsnetwork.com/wp-content/uploads/2021/03/San-Vicente-Fill-Chute-845x450-primary.jpg450845Mike Leehttps://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.pngMike Lee2021-03-08 17:52:342021-03-09 07:28:42Water Authority Plan Shows Sufficient Supplies Through 2045
The San Diego County Water Authority’s Board of Directors today unanimously approved a formal resolution reaffirming its longstanding support for potable reuse and water recycling projects developed by local member agencies across the region.
“Projects such as Pure Water San Diego, Pure Water Oceanside and the East County Advanced Water Purification Project are critical to the continued development of local water sources that help sustain the region’s 3.3 million residents and $245 billion economy,” said Water Authority Board Chair Gary Croucher. “The Water Authority has long supported water reuse and recycling projects, and we will continue to collaborate with member agencies in developing these vital local resources.”
Water supply diversification
For more than two decades, the Water Authority has promoted the advancement of water recycling and reuse in San Diego County as part of the region’s water supply diversification and reliability strategy.
The agency has sponsored and supported legislation to speed the development of potable reuse regulations in California, and has worked as an active member of the WateReuse Association to help shape the statutory and regulatory framework for potable reuse in the state. And Water Authority investments in high-priority, highly reliable water from the Colorado River support the development of local resources by delivering a low-cost baseload of water that can be recycled and repurified.
Potable reuse project funding
In addition, the Water Authority has advocated for robust funding in state bond measures, including seeking the inclusion of up to $500 million to expedite potable reuse and advanced water treatment projects in a legislative bond measure targeted for the November 2022 ballot. The Water Authority also helped secure nearly $500 million for local projects from the Metropolitan Water District of Southern California in 2019 and 2020, and most of that money was for potable reuse.
Potable reuse relies on advanced treatment technologies to produce a high-quality drinking water that is locally controlled, drought-resilient, and reduces wastewater ocean discharges. Every gallon of recycled or repurified water reduces the need to import or develop other supplies.
Recycled water, potable reuse projects under construction
Approximately 33,000 acre-feet of recycled water is expected to be reused within the Water Authority’s service area annually by 2025. The volume is expected to continue growing as new and expanded potable reuse plants come online. They are projected to produce more than 112,000 acre-feet per year of new drinking water supplies by 2045, enough to meet nearly 18% of the region’s future water demand.
Two of the first three potable reuse projects are now under construction in San Diego County:
A third project, the East County Advanced Water Purification Program, a combined effort by the City of El Cajon, Padre Dam Municipal Water District, the County of San Diego, and the Helix Water District, is in the design/pre-construction phase.
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.”
Pure Water Oceanside Project foundation walls in place
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.
Coco Farms Drive and Fireside Park construction update
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.
El Camino Real recycled water expansion pipeline work coming soon
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.
Oceanside Project benefits both residents and environment
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.
https://www.waternewsnetwork.com/wp-content/uploads/2021/02/Pure-Water-Oceanside-SLR-Tilt-Wall-22-845X450.jpg450845Gayle Falkenthalhttps://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.pngGayle Falkenthal2021-02-10 06:21:312021-02-10 06:48:03Pure Water Oceanside Project Reaches Milestones
A major construction project to improve drinking water supply reliability in North San Diego County will start in February after the San Diego County Water Authority’s Board of Directors today approved an $11.4 million contract for the work to Pacific Hydrotech Corporation of Perris, Calif.
The Hauck Mesa Storage Reservoir project includes demolition of an abandoned steel tank, building a 2.1 million-gallon storage reservoir connected to the Valley Center Pipeline, and construction of an isolation vault and an underground flow control facility. The project is expected to be completed by winter 2022.
Infrastructure improvements ensure water delivery
Strategic infrastructure improvements by the Water Authority and its 24 member agencies are part of the regional effort to ensure continued delivery of water to support the region’s $245 billion economy and the quality of life for 3.3 million residents. The Water Authority just completed a $30 million series of upgrades on the historic First Aqueduct in North County to ensure these facilities continue to serve the region for many more decades.
“These upgrades are investments in our future,” said Water Authority Board Chair Gary Croucher. “Ever-changing conditions mean the work is complex and challenging, but continued vigilance helps ensure that we can meet our region’s water needs both today and for decades to come.”
As part of the asset management program, it is critical to actively replace and repair the Water Authority’s assets, which include pipes, valves, facilities, equipment and other infrastructure.
Operational flexibility
The new Hauck Mesa Storage Reservoir will provide operational flexibility, enhanced system reliability for the day-to-day operations of the aqueduct system, and help ensure water deliveries can be maintained even if power supplies are interrupted.
The Water Authority will continue to work closely with the Valley Center community, Valley Center Municipal Water District, and nearby homeowners to minimize short-term construction impacts.
https://www.waternewsnetwork.com/wp-content/uploads/2021/01/Hauck-Mesa-Storage-Reservoir.jpg450845Mike Leehttps://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.pngMike Lee2021-01-28 15:24:142021-01-28 15:24:14New Reservoir to Protect Local Drinking Water Deliveries in North County
When the Helix Water District received contractor estimates as high as $3.5 million to upgrade the R.M. Levy Water Treatment Plant’s ozone power supply units and generators, it decided to perform the upgrade in-house.
With Suez Water Technologies provided engineering and equipment, Helix employees incorporated new technology and innovative installation practices. The proof of concept pilot project proved the feasibility of the new approach, and a full retrofit is now planned. The estimated upgrade costs to complete the full project is $1.1 million – an approximately 70% cost savings. The upgrade will extend the life of the power supply units and generators at least 15 years.
Reducing upgrade costs saves ratepayers
“The ozone project is our latest example of cost-effective local government,” said Brian Olney, Helix Water District director of water quality and system operations. “In early 2020, Helix staff also standardized the design, hardware, and software of the motor control centers in the district’s 25 pump stations, and that project also saved our customers money, and created long-term operating, maintenance and purchasing efficiencies.”
Ozone treatment provides safe and reliable water to East County
The ozone generator at Helix Water District’s R.M. Levy Water Treatment Plant in Lakeside. Photo: Helix Water District
The water treatment process at the R.M. Levy Water Treatment plant begins with the removal of dirt and other material suspended in the water. Ozone is then used to inactivate or destroy any organisms in the water. Ozone offers important advantages over chlorine:
Ozone destroys or inactivates a wide range of organisms in the water
Ozone needs little contact time with the water to be effective
Ozone produces fewer potentially harmful disinfection byproducts than other disinfectants
Ozone removes most of the smell and taste issues people associate with tap water
Helix Water District’s ozone project team (pre-pandemic) in front of the rebuilt power supply unit. Photo: Helix Water District
Ozone is naturally unstable at normal atmospheric conditions, which is why Helix needs ozone generators to produce it on site. The high voltage generators break down oxygen molecules (O2) and form ozone (O3). The ozone molecules are then diffused in a contact chamber and bubble up through the water to destroy any organisms present.
After ozonation, Helix Water District filters the water and adds a dose of chloramines — chlorine and ammonia — to maintain water quality throughout its 737 miles of water distribution pipelines. The treatment process is managed by a team of highly trained plant operators who conduct 200 water quality tests per day. Chemists and biologists test water samples from both the plant and the distribution system as well.
https://www.waternewsnetwork.com/wp-content/uploads/2021/01/Ozone-generator-part-installation-845X450.jpg450845Gayle Falkenthalhttps://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.pngGayle Falkenthal2021-01-12 10:06:282021-01-12 10:18:49Helix Water District Reduces Plant Upgrade Costs
A dry start to California’s water year is reflected in the season’s first snow survey of the Sierra Nevada snowpack. The statewide snowpack is 52% of average for Dec. 30. On average, the Sierra snowpack supplies about 30% of California’s water needs.
The California Department of Water Resources manual survey at Phillips Station recorded 30.5 inches of snow depth and a snow water equivalent of 10.5 inches, which is 93% of the January 1 average at that location, according to DWR officials. The snow water equivalent,or SWE, measures the amount of water contained in the snowpack and is a key component of DWR’s water supply forecast.
While the Phillips Station measurement was positive, DWR’s electronic readings from 130 stations placed throughout California show the statewide snowpack’s SWE is 5 inches, or 52% of the December 30 average.
“The snow survey results reflect California’s dry start to the water year and provide an important reminder that our state’s variable weather conditions are made more extreme by climate change,” said DWR Director Karla Nemeth. “We still have several months left to bring us up to average, but we should prepare now for extended dry conditions. The Department, along with other state agencies and local water districts, is prepared to support communities should conditions remain dry.”
Water supply diversity meets regional demand
“The first snowpack survey of the water year points to California’s climate variability, which is why a diverse water portfolio is needed to provide a reliable supply,” said Goldy Herbon, San Diego County Water Authority senior water resources specialist. “The Water Authority and its 24 member agencies have successfully diversified water sources, and continue to expand those sources, to ensure our supply meets the needs of the region’s 3.3 million people and its $245 billion economy.”
The supply sources include water from the Claude “Bud” Lewis Carlsbad Desalination Plant, where ten workers volunteered to live on-site in 2020 to keep the water flowing during the coronavirus pandemic.
Climate change brings less snow
When the Sierra Nevada snowpack melts, it feeds into rivers and is stored in reservoirs across California. Reservoirs are tapped as needed during the dry months. However, state officials again said that climate change is affecting California’s snowpack, as more precipitation falls as rain and less as snow. And they urged Californians to make water conservation a “way of life.”
“Today’s survey brought a first glimpse of how the state’s snowpack is shaping up, but there is a lot of winter still ahead,” said Sean de Guzman, chief of DWR’s Snow Surveys and Water Supply Forecasting Section. “While the dry conditions during late summer and fall have led to a below average snowpack, it is still encouraging to have the amount of snow we already have with two of the three typically wettest months still to come.”
DWR conducts five snow surveys at Phillips Station each winter near the first of each month, January through April and, if necessary, May. Guzman said the next survey is scheduled for February 2.
Sean De Guzman (R), chief of the California Department of Water Resources Snow Surveys and Water Supply Forecasting Section, and Jeremy Hill, DWR water resources engineer, conduct the first snow survey of the 2021 season at Phillips Station in the Sierra Nevada. Photo: Kelly M. Grow/DWR
https://www.waternewsnetwork.com/wp-content/uploads/2020/12/Guzman-snowpack-survey-primary2.png450845Mike Leehttps://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.pngMike Lee2020-12-30 13:43:232020-12-30 14:53:52Dry Start to California’s Water Year
The Water News Network top stories of 2020 reflect the San Diego region’s interest in water conservation, the environment and efforts to diversify water supply sources. But the year was dominated by the coronavirus pandemic, which impacted water infrastructure and operations.
As one of essential sectors of the economy, the water and wastewater industry took added COVID-19 precautions. The essential employees of the San Diego County Water Authority and its 24 member agencies worked to ensure the continued safety and reliability of the region’s water supply. In some cases, that meant sheltering-in-place, which employees of the Claude “Bud” Lewis Carlsbad Desalination Plant did in March. For agencies operating multiuse recreational facilities, such as Lake Jennings, the pandemic also caused frequent schedule changes.
To reassure users about the safety of the water supply, the Water Authority and its member agencies shared a series of videos with the public, featuring Switchfoot’s Jon Foreman, to let people know they can “Trust the Tap.”
Top Stories of 2020
COVID-19
Reservoirs and lakes operated by water agencies in San Diego County were closed or had varying schedules due to the coronavirus pandemic. The impact of the pandemic on recreational facilities in the region was the most viewed story of 2020.
Paddleboarders enjoy Lake Hodges before the City of San Diego closed the lake due to the coronavirus pandemic. Photo: City of San Diego
Reservoirs, Lakes Remain Closed to Fishing Due to COVID-19 Pandemic
Although San Diego County’s lakes and reservoirs remain closed to fishing and other recreational activities for safety reasons due to the coronavirus pandemic, staff and volunteers continue to work. Crews are maintaining facilities, providing security, and sharing photos of wildlife and native blooms enjoying the arrival of spring.
The City of San Diego’s reservoirs and lakes are closed due to the coronavirus pandemic. The city closed the reservoirs to the public on March 18 to protect the public and minimize the spread of the COVID-19 virus. The nine water supply storage reservoirs are operated by the City’s Public Utilities Department.
Popular overnight campsites remain open at Santee Lakes, owned and operated by the Padre Dam Municipal Water District.
“Camper well-being is important to us and Santee Lakes didn’t want to displace people,” said Melissa McChesney, Padre Dam communications manager. She said that includes long-term campers who spent winter at the lake.
At Lake Jennings, Recreation Manager Kira Haley says eight volunteers continue to live and work from their campground homes in recreational vehicles and campers. She said their days remain “pretty typical” even though they see more wildlife and not people.
Environmental Stewardship
COVID-19 played a part in the second most viewed Water News Network story in 2020.
Three new fish-friendly seawater intake pumps commissioned at the Claude “Bud” Lewis Carlsbad Desalination Plant, are among the most environmentally advanced intake pumps in the world. The pumps are part of a broader effort to ensure the long-term health of the marine environment near the Plant, which sits on the shores of Agua Hedionda Lagoon. Photo: San Diego County Water Authority
New Fish-Friendly Seawater Intake Pumps at Carlsbad Desalination Plant
July 22, 2020
New fish-friendly seawater intake pumps recently commissioned at the Carlsbad Desalination Plant are among the most environmentally advanced intake pumps in the world.
The three intake pumps, manufactured by Indar, are part of a broader effort to ensure the long-term health of the marine environment near the Claude “Bud” Lewis Carlsbad Desalination Plant, which sits on the shores of Agua Hedionda Lagoon.
Installation of the new intake pumps is part of a phased program to replace the existing seawater intake and discharge facilities with state-of-the-art technology to protect marine life that wasn’t available when the plant was operating with source water from the Encina Power Station. The closure of the power station in December 2018 led to temporary intake-discharge operations until the new intake pumps came online. The next steps include adding new intake screens, designed to prevent any sea-life larger than 1 millimeter (thicker than a credit card) from entering the plant.
The new intake screens are the final part of upgrades, which when complete in 2023, will make the Carlsbad Desalination Plant the first desalination facility in California to comply with the 2015 California Ocean Plan Amendment, which is among the most advanced sea-life protection measures in the world. Photo: San Diego County Water Authority
Essential work during COVID-19 pandemic
The work to complete the construction and commissioning of the new fish-friendly seawater intake pumps was part of the essential work allowed under California guidelines during the COVID-19 pandemic. The contractor, Kiewit–Shea Joint Venture, worked in accordance with guidelines adopted by the State Building and Construction Trades Council and approved by Governor Gavin Newsom for essential construction. The contractor worked uninterrupted to complete the project per the June 30, 2020, deadline set by the Regional Water Quality Control Board without any health or safety violations.
Recycled Water
The groundbreaking for the Pure Water Oceanside project was the third most read story of 2020 on the Water News Network.
Construction is underway on the $67 million Pure Water Oceanside project, which is scheduled to be completed in 2021. Photo: San Diego County Water Authority
First Advanced Water Purification Facility in San Diego County is On the Map
City of Oceanside officials and regional water industry leaders gathered today to break ground on Pure Water Oceanside, the first advanced water purification facility in San Diego County. The $67 million project – scheduled to be completed in 2021 – will purify recycled water sourced from the San Luis Rey Water Reclamation Facility.
“Today, we put Pure Water Oceanside on the map and are one step closer to achieving the goal of greater water-independence for our city, residents and businesses,” said Cari Dale, Oceanside’s water utilities director. “This future-focused project will provide multiple benefits by reusing our water resources to their full potential.”
City leaders and water experts placed a giant Google Maps “location pin” into the ground at the San Luis Rey Water Reclamation Facility, which marked that the new recycled water project is now officially on the map. Photo: San Diego County Water Authority
Reducing dependence on imported supplies
The local project will reduce Oceanside’s dependence on imported water by more than 30%. The purification process is inspired by the natural water cycle and reduces the amount of recycled water discharged into the ocean.
The project is partially funded by the Local Resources Program through the San Diego County Water Authority and Metropolitan Water District of Southern California.
“The tremendous conservation focus, water infrastructure planning and investment by the Water Authority and its 24 member agencies has put our regional supplies in solid standing,” said Water Authority General Manager Sandra L. Kerl. “The mission of providing reliable water supplies to San Diego County can be likened to a puzzle; there are many pieces that fit together to create an overall solution. Our next increment of supply in the San Diego region is from potable reuse projects.”
Water Reuse and Recycling Top Stories in 2020
Other top stories in 2020 covered by the Water News Network included updates on several water reuse and recycling projects, including:
Construction of Phase 1 of the Pure Water Program is scheduled to begin in early 2021. Phase 1 will include a full-scale, 30-million-gallon-per-day Pure Water Facility that will use the five water purification steps modeled at the Demonstration Facility.
The East County AWP will be one of the first potable reuse projects in California to use new reservoir augmentation regulations. The program will meet up to 30% of East San Diego County’s drinking water demands, almost 13,000 acre-feet of water per year, and eliminate the discharge of 15 million gallons of partially treated wastewater into the Pacific Ocean.
The Santa Margarita River Conjunctive Use Project is a joint project with Marine Corps Base Camp Pendleton, and will eventually supply about 30% of the Fallbrook Public Utility District’s water, and virtually all of Camp Pendleton’s water.
Trust the Tap
https://www.waternewsnetwork.com/wp-content/uploads/2020/12/lake-jennings-covid19-845X450.jpg450845Mike Leehttps://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.pngMike Lee2020-12-28 18:41:052021-02-11 15:53:37Water News Network Top Stories of 2020
The Claude “Bud” Lewis Carlsbad Desalination Plant is celebrating its fifth year of operation this month. More than 65 billion gallons of water from the plant have provided a sustainable and reliable supply to businesses and residents of San Diego County since December 2015.
The Carlsbad Desalination Plant produces 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 the region’s vulnerability to drought or other water supply emergencies.
Desalination plant diversifies region’s water supply sources
“The desalination plant is a key piece of the region’s multi-decade strategy to diversify our water supply portfolio,” said Sandra L. Kerl, general manager of the San Diego County Water Authority. “As we celebrate five years of operation, the plant continues to provide a drought-proof supply that reduces our dependence on imported water sources vulnerable to droughts, natural disasters, and regulatory restrictions.”
A 30-year Water Purchase Agreement between Poseidon Water 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. The facility is the largest, most technologically advanced and energy-efficient desalination plant in the nation.
Carlsbad Desalination Plant celebrates water supply accomplishment
“The Carlsbad Desalination Plant was once merely an ambitious vision. Fast forward to today, and we are celebrating the plant’s fifth anniversary of operations, during which we have successfully produced enough water to meet the needs of San Diego County residents,” said Carlos Riva, CEO of Poseidon Water. “This is an incredible accomplishment and an example of how communities throughout California can invest in the state’s future water security.”
The Carlsbad plant uses reverse osmosis to produce approximately 10% of the region’s water supply; it is a core supply regardless of weather conditions, and it is blended with water from other sources for regional distribution. 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.
Reverse osmosis is the heart of the Carlsbad 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
Milestones
July 22, 2020: New Seawater Intake Pumps Preserve Marine Environment
Three new fish-friendly seawater intake pumps, commissioned in July 2020 at the Claude “Bud” Lewis Carlsbad Desalination Plant, are among the most environmentally advanced intake pumps in the world. The pumps are part of a broader effort to ensure the long-term health of the marine environment near the Plant, which sits on the shores of Agua Hedionda Lagoon. Photo: San Diego County Water Authority
Installation of the new intake pumps is part of a phased program to replace the existing seawater intake and discharge facilities with state-of-the-art technology to protect marine life. The technology wasn’t available when the plant was operating with source water from the Encina Power Station.
The next steps include adding new intake screens, designed to prevent any sea-life larger than 1 millimeter (thicker than a credit card) from entering the plant. The new intake screens are the final part of upgrades, which when complete in 2023, will make the Carlsbad Desalination Plant the first desalination facility in California to comply with the 2015 California Ocean Plan Amendment, among the most advanced sea-life protection measures.
December 13, 2018: Carlsbad Desalination Plant Celebrates 40 Billion Gallons Served
Desalination plant project partners Poseidon Water and the San Diego County Water Authority celebrated delivering 40 billion gallons of drought-resilient drinking water to San Diego County during three years of commercial operations at the plant.
“It’s incredible what we’ve accomplished in three years,” said Sandra L. Kerl, at the 2018 celebration event, general manager of the Water Authority. “Since coming online in 2015, the Carlsbad Desalination Plant has met nearly 10 percent of the region’s water demand, and it will be a core water resource for decades to come.”
Officials toasted a significant milestone in regional water supply reliability on December 13, 2018 at the Carlsbad Desalination Plant – the delivery of 40 billion gallons of drinking water during the plant’s first three years of commercial operations. (L to R: Water Authority Deputy General Manager Sandra Kerl, Poseidon Water CEO Carlos Riva, and former U.S. Senator Barbara Boxer share a toast at the third anniversary event. Photo: San Diego County Water Authority)
December 14, 2015: Region Dedicates New Plant in Honor of Former Carlsbad Mayor Claude ‘Bud’ Lewis
Operations are under way at the nation’s largest and most technologically advanced seawater desalination plant, which was dedicated today by more than 600 elected officials, community leaders and project partners. After successfully completing construction, the Claude “Bud” Lewis Carlsbad Desalination Plant has already produced more than 1.5 billion gallons of locally controlled water for San Diego County, helping to minimize the region’s vulnerability to the statewide drought.
The Carlsbad Desalination Project included 1.5 million hours of work in Carlsbad, Vista and San Marcos, supporting an estimated 2,500 jobs and infusing $350 million into the local economy. Project partners included the Water Authority, Poseidon Water, IDE Technologies, Stonepeak Infrastructure Partners and Kiewit-Shea Desalination. Photo: San Diego County Water Authority
June 29, 2015: Pipeline Installation Completed
Construction of the 54-inch diameter pipeline began in spring 2013 in San Marcos. Crews worked in Carlsbad, Vista and San Marcos to reduce impacts on local businesses and residents. During the three-year construction process, the project supported an estimated 2,500 jobs and infused at least $350 million into the regional economy. Photo: San Diego County Water Authority
After more than two years of work, Carlsbad Desalination Project crews installed the final segment of the 10-mile conveyance pipeline that connects the Carlsbad Desalination Plant to the San Diego County Water Authority’s regional water distribution system. Construction crews lowered the final piece of pipe – No. 2177 – into Macario Canyon in Carlsbad on June 29, 2015, completing a major element of the historic project.
“This final piece of pipe is a significant milestone for the Carlsbad Desalination Project, and a sign that the entire construction project is entering its final phase,” said Peter MacLaggan, vice president of Poseidon Water, the project’s private developer.
The final segment of the desalination project’s pipeline is installed on June 29, 2015. The pipeline stretches 10 miles from the plant through the cities of Carlsbad, Vista and San Marcos to the Water Authority’s Second Aqueduct. Photo: San Diego County Water Authority
January 2014: Desalination Plant Completes First Year of Construction
The Carlsbad Desalination Project includes a seawater desalination plant and a 10-mile, large-diameter pipeline. Construction on the plant began in late 2012 and pipeline construction began in spring 2013. Photo: San Diego County Water Authority
December 28, 2012: Construction Starts for the Carlsbad Desalination Plant
Construction of the Claude “Bud” Lewis Carlsbad Desalination Plant started on December 28, 2012. Photo: San Diego County Water Authority
November 29, 2012: Water Authority approves 30-year Water Purchase Agreement with Poseidon Resources
The San Diego County Water Authority approves a 30-year agreement for the purchase of up to 56,000 acre-feet of desalinated seawater per year from project developer Poseidon Resources. With the agreement approved, Poseidon and the Water Authority secured financing in the bond market and construction started a month later.
For 60 years, Miramar Reservoir has been an integral part of the City of San Diego’s drinking water system and offers San Diegans a popular recreational area. Now, the reservoir is being called into service to play a vital part in San Diego’s future Pure Water system to sustain a reliable water supply.
The City of San Diego is commemorating the 60th anniversary of Miramar Reservoir, its role in the region’s history, and the part the reservoir will play in the future.
“We celebrate not only Miramar Reservoir’s past, but the critical role it will play when the Pure Water system is completed,” said Shauna Lorance, director of the San Diego Public Utilities Department. “Miramar Reservoir will continue to be a key part of our water system for many years to come.”
Role in San Diego’s history
An aerial view of the Miramar Reservoir under construction in 1960. Photo: Jeff Pasek/City of San Diego
Miramar Reservoir marks 60
Miramar was the last of the City’s nine reservoirs to be developed. It was completed in 1960 as part of the second San Diego Aqueduct. The location previously had been the site of a small reservoir serving the vast ranch of newspaper publisher Edward W. Scripps.
Water flowing south to the reservoir originates from both the Colorado River Aqueduct and the California Aqueduct. The earthen embankment dam has a maximum height of 165 feet measured from the downstream toe, and has a base of 1,180 feet.
Dignitaries attend the Miramar Reservoir dedication ceremony in 1960. Photo: Jeff Pasek/City of San Diego
It was constructed by contractors Einer Brothers Inc. of Escondido and McCammon Construction, for $1.42 million. Land acquisition and engineering costs were approximately $730,000. Funds for the project came from an $11 million water bond approved by San Diego voters in June 1958.
When full, the reservoir covers 274 surface acres, reaches a maximum water depth of 114 feet, and has four miles of shoreline. Miramar Reservoir has a water storage capacity of 6,682 acre-feet.
Miramar Water Treatment Plant, which was completed in 1962 at a cost of $3.5 million, and expanded and upgraded in 2010, treats and filters drinking water distributed to customers in the northern part of San Diego.
Since the mid-1960s, the reservoir has been a popular recreational destination. An estimated 100,000 people visit Miramar each year to enjoy jogging, walking, biking, fishing, boating, picnicking, among other activities.
Miramar Reservoir to become part of Pure Water San Diego
The Miramar Reservoir is poised to play a key role in the Pure Water San Diego project. Photo: City of San Diego
When the Pure Water system comes online, Miramar Reservoir will switch from holding imported water to holding purified water received through a pipeline from the planned North City Pure Water Facility. After water has been purified at the North City Pure Water Facility, it will then be transferred via pipeline to Miramar Reservoir. The Miramar Water Treatment Plant will clean the water again, and the water will be distributed to homes and businesses throughout northern San Diego.
Miramar Reservoir will continue use into the foreseeable future as it helps provide one-third of San Diego’s water supply locally by the end of 2035.
https://www.waternewsnetwork.com/wp-content/uploads/2020/12/Miramar-Construction-Jeff-Pasek-City-SanDiego-845X450.jpg450845Gayle Falkenthalhttps://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.pngGayle Falkenthal2020-12-08 05:53:052020-12-08 07:09:51Miramar Reservoir Marks 60 Years of Service
