Recycled Water Project Nears Milestone, Costs Escalate Again
Projects to turn wastewater into drinkable water are progressing in San Diego and East County, but their costs have once again spiked.
Projects to turn wastewater into drinkable water are progressing in San Diego and East County, but their costs have once again spiked.
The East County Advanced Water Purification Program (East County AWP) has made significant progress since breaking ground on construction nearly two years ago. The Program will create a local, clean, safe and drought-proof drinking water supply using state-of-the-art technology to purify East San Diego County’s recycled water.
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.
Design is underway on the $500-million Donald C. Tillman Advanced Water Purification Facility, one of the largest potable reuse projects in the country.
Led by LA Sanitation and Environment (LASAN) and the Los Angeles Dept. of Water and Power (LADWP), the facility will be constructed via progressive design-build, with Jacobs serving as the lead contractor.
The East County Advanced Water Purification Program broke ground Wednesday, marking an important milestone for the project, which could purify up to 11.5 million gallons of water per day when it’s completed.
Program representatives, elected officials and water industry leaders gathered Wednesday at the future site of the treatment facility in Santee. The project was approved on May 19 by the East County AWP Joint Powers Authority, which owns and operates the program, and is a collaborative partnership between four agencies: Padre Dam, the city of El Cajon, the county of San Diego and the Helix Water District.
The Soquel Creek Water District in California held a groundbreaking ceremony last week, commemorating the start of construction on its Advanced Water Purification Center – the core of the district’s Pure Water Soquel Groundwater Replenishment and Seawater Contamination Prevention Project.
The City of San Diego’s Pure Water Demonstration Facility public tour is now available as a virtual tour. A new video provides an up-close look at the technology behind the water purification plant. In-person tours are on hold due to the coronavirus pandemic and will resume once it is safe to do so.
Since opening in June 2011, nearly 19,000 people have toured the one-million-gallon-per-day facility in person. Now, the Pure Water Demonstration Facility Virtual Tour takes viewers step-by-step through each of the five treatment processes used to create Pure Water.
Members of the City Pure Water team including wastewater operators, engineers, and water resource specialists explain the equipment and technology. Each is accompanied by graphics and animations showing the inner workings of each barrier. The video also includes drone footage for a bird’s-eye view perspective not previously available to the public.
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 North City Pure Water Facility will be constructed on a City of San Diego owned parcel east of Interstate 805 and north of Eastgate Mall, across from the existing North City Water Reclamation Plant.
Senior Wastewater Operations Supervisor John Carroll gives viewers a bird’s eye view of the facility. Photo: City of San Diego
Purified water produced at the completed plant will be delivered to the Miramar Reservoir, blended with the City of San Diego’s imported and local water sources, and treated again at the existing Miramar Drinking Water Treatment Plant. After this process, the water will be distributed to customers. Phase 1 projects are expected to be completed in 2025.
The tour video is available at virtualtour.purewatersd.org More information about the Program can be found at www.purewatersd.org.
A water recycling project that will purify treated wastewater into drinking water for East San Diego County is moving toward its completion date after the Helix Water District Board of Directors authorized the signing of water purchase agreements.
The East County Advanced Water Purification Project is a collaborative, regional effort to diversify the district’s water portfolio and provide a drought-proof supply. The water reuse project will further enhance reliability by purifying treated wastewater using Lake Jennings and other facilities.
The Helix Water District Board of Directors authorized its General Manager to sign water purchase agreements for the East County Advanced Water Purification Project at a special meeting on May 27.
The $681 million project, led by the East County AWP Joint Powers Authority, will recycle daily wastewater flows from Santee, El Cajon, Lakeside, Winter Gardens and Alpine. Treated water will undergo membrane filtration, reverse osmosis and advanced oxidation to produce water that is near-distilled in quality.
The purified water will be piped into Helix’s Lake Jennings before undergoing additional processing at the district’s R.M. Levy Water Treatment Plant and then distributed as safe, clean drinking water.
“I’m looking forward to the development of this project and I believe it’s an investment that strengthens our district’s water supply reliability and security,” said Helix Water District Board President Mark Gracyk. “This is a great example of what can be accomplished by working with our neighboring agencies.”
East County AWP project water will reduce east San Diego County’s dependence on imported water by almost 30% once full operations begin in 2026. The project will create a local supply for the East County at about the same cost as what Helix pays now for imported water, according to the Helix Water District.
San Diego County water agencies, including Helix, Padre Dam, and the cities of San Diego and Oceanside, are developing or expanding water recycling projects. Diversifying local supply sources remains a priority for the San Diego County Water Authority. Imported sources, including water from the Colorado River and State Water Project, can be cutback during times of drought.
“The project was conceived by JPA members as a way to reduce rising wastewater costs for their customers,” said Helix Water District General Manager Carlos Lugo. “For Helix to participate, the project had to make financial sense for our ratepayers as well. By expanding our local supply, the East County AWP project water will help ensure that we are better able to navigate future droughts.”
The 30-year purchase agreements establish the cost and quantity of water that Helix will purchase from the East County AWP JPA under the proposed project.
An artist’s rendering of the new East County Advanced Water Purification Facility. The water recycling project is a partnership between Padre Dam MWD, Helix Water District, San Diego County and the City of El Cajon Graphic: Courtesy Padre Dam Municipal Water District
Helix and the JPA members – Padre Dam Municipal Water District, San Diego County Sanitation District and the City of El Cajon – have been working together to evaluate the ECAWP plan since 2014. Each JPA member has until 2021 to make a final decision on the feasibility of the project and participation.
Helix has invested $850,000 and significant board and staff resources to study the feasibility of the project, including a tracer study with Scripps Institution of Oceanography to learn how water moves and mixes in Lake Jennings.
“We are committed to exploring sustainable projects that benefit our customers,” said Gracyk. “The ECAWP project will be a great complement to our other ongoing investments in regional water supply projects, such as the Carlsbad Desalination Plant, to ensure we have enough water to meet demand.”
I hope this finds you safe and healthy despite the challenging circumstances that we face as a region, state and nation.
While our hearts are heavy, we continue working on several critical issues at the Water Authority this month, and I would like to share three of them with you briefly.
As always, I will continue to update you on these critical issues and others in the weeks ahead.
The Helix Water District Board of Directors authorized its General Manager to sign water purchase agreements for the East County Advanced Water Purification project at a special meeting on May 27, 2020.