Work has been underway on a recycled water treatment project in Santee for about two years. In another two years, some East County residents will get their drinking water from the East County Advanced Water Purification program.
One of the largest water valves key to Helix Water District operations was recently replaced. The massive five-ton, five-foot diameter valve is one of the largest in the district’s operation.
This valve isolates a section of pipe allowing water from Lake Jennings to flow into the R.M. Levy Water Treatment Plant. This replacement addresses two needs: First, it replaces an aging valve, and second, it allows Helix Water District to make cost-effective improvements on a 62-year-old supply line feeding the water treatment plant.
Helix Water District crews prepare the five-ton replacement valve for installation. Photo: Helix Water District
The valve replacement is among the major improvements underway that will help move, treat, and deliver new water from the East County Advanced Water Purification Program. The program will come online for East County in 2026.
The East County AWP program creates a new, local, and drought-proof water supply using state-of-the-art technology. It will purify recycled water, producing up to 30% of East County’s drinking water.
All work on installing the replacement valve in its new location took place in one day. Photo: Helix Water District
The large valve isolates a section of the Lake Jennings pipeline, which moves water out of Lake Jennings and to the inlet of the Levy treatment plant. Since the new East County AWP water will flow through this pipeline 24 hours a day every day for the next 30 years, it is vital for the Helix Water District to inspect and make any necessary repairs to ensure the pipeline is in excellent condition before the new water source comes online. The old valve had exceeded its useful life.
Replacing the large valve also allowed the Helix WD to relocate the new valve, improving access for inspections and maintenance. The previous valve was located over 400 feet from where the water enters our treatment plant and upstream of our other supply pipeline, leaving this section of the pipeline filled with water.
The new water valve has an expected operation life of 50 years. Photo: Helix Water District
Before relocating the new valve, Helix maintenance teams could only access this section of pipe during a treatment plant shutdown. While working on the old valve, the district needed to purchase more expensive imported water to serve its customers while the plant was shut down and unable to produce its regular supply.
With the new valve in place, fewer shutdowns will occur and prevent the need for purchasing supplemental imported water while performing maintenance and repairs. Relocating this valve and keeping the plant running was the best option for long-term operations and cost savings.
Maintenance professionals secure the new valve into place. Photo: Helix Water District
Construction started early in the morning by cutting out an existing pipe section near the treatment plant’s headworks. The new valve was lowered into position, aligned, welded together, and up and running within 14 hours. The valve is so large it takes more than 400 rotations to close it. The new value is expected to have a useful life of 50 years.
Current work to accommodate the East County AWP project is still in progress. It involves creating new access ways, removing the old valve, constructing a new vault, and preparing the Lake Jennings pipeline for inspection.
Proactive projects like the valve replacement reduce risk, give staff flexibility and redundancy, and prepare the Helix Water District for more efficient operations. Photo: Helix Water District
Once completed, the district will have longer-lasting infrastructure that can meet the demands of our region and future water supplies. Proactive projects like the valve replacement reduce risk, give staff flexibility and redundancy, and prepare the Helix Water District for more efficient operations.
To learn more about East County AWP, please visit https://eastcountyawp.com/
When conserving water isn’t enough, water engineers are looking to reuse water we already have.
The California State Water Resources Control Board on Tuesday approved new regulations for direct potable reuse, AKA “toilet to tap” — that’s when purified water is piped directly from a sewage treatment plant to your home.
Facing criticism over their ambitious plan to curb urban water use, California’s regulators today weakened the proposed rules — giving water providers more years and flexibility to comply.
Work on the East County Advanced Water Purification Program facilities and pipelines reached multiple milestones at the start of 2024, and construction continues on schedule at multiple East County locations through 2025. As soon as 2026, the AWP will deliver water to the faucets of customers in the Padre Dam Municipal Water District, Helix Water District, Lakeside Water District service areas, and the northern portion of the Otay Water District service area.
At the main construction site north of Santee Lakes, more than 60% of the concrete has been poured for the water recycling, solids handling, and advanced water purification facilities. Nearly 60% of the 2.3 total miles of open-cut construction on wastewater pipelines that make up the AWP Program are complete.
More than 60% of the concrete has been poured for the East County Advanced Water Program water recycling, solids handling and advanced water purification facilities. Photo: East County AWP
Construction also continues on Fanita Parkway, north of Ganley Road in Santee, and within Santee Lakes Recreational Preserve. Pipeline water testing is now underway on that installed pipeline.
Work on the pipelines for the East County Advanced Water Program is affecting access to the Santee Lakes Recreational Preserve, which remains open. Photo: East County AWP
In addition, pipeline work at Santee Lakes is occurring between Lakes 3 and 4. There is a road closure and no parking in some areas. The Kiwanis Playground at Lake 4 remains open and parking has been preserved for playground visitors.
“Roughly a year and a half ago, we started with a blank slate and since then, the Joint Powers Authority and its project partners have made significant achievements at each of the construction sites,” said Mark Niemiec, director of the East County AWP. “It’s during these ongoing activities within the community including at Santee Lakes that we really appreciate our neighbors’ patience and understanding.”
These new pipelines servicing the East County Advanced Water Program will soon be moved underground. Photo: East County AWP
The wastewater pipelines that will run from the East Mission Gorge Pump Station near State Route 52 to the first lake at Santee Lakes will soon be pulled underground. This trenchless construction method called “Horizontal Directional Drilling” minimizes the impacts to nearby waterways, including the San Diego River. The process takes an estimated 24 to 36 straight hours.
Elsewhere, Fanita Parkway will be temporarily closed for up to one week in March between Ganley Road and Lake Canyon Road to allow for paving on both sides of the street. Residents will see detour signs prior to the closure. The road closure will occur during the day from 7 a.m. to 5 p.m.
Purified water pipeline construction is continuing west on Mast Boulevard in Santee, as well as west on Mapleview Street in Lakeside and from Laurel Canyon Road to El Monte Road. Lane closures can be expected.
Residents and commuters in Santee and Lakeside can monitor road closures on the East County AWP website. Photo: East County AWP
Construction on the 23,000-square-foot Visitors Center is in progress and will be completed by the end of 2025. It will house administrative offices, the operation control center, a testing laboratory, and a community room. The steel beam installation, including 66 columns and 100 beams, will use 350,000 pounds of U.S. steel.
The Flume Trail at Lake Jennings is officially back open following a 10-month closure for purified pipeline construction. The trail will close again during the summer for a couple of months to allow for additional pipeline construction near the shoreline.
The Flume Trail at Lake Jennings is officially back open following a 10-month closure. It will close again for additional construction later this summer. Photo: East County AWP
When complete, the East County AWP Program will be able to create up to 11.5 million gallons of purified water per day, which is enough to serve an estimated 400,000 people, or roughly 30% of East San Diego County’s water supply.
When operational, the East County AWP will be able to create up to 11.5 million gallons of purified water per day which is enough to serve roughly 30% of East San Diego County’s water supply. Photo: East County AWP
To stay up-to-date with project schedules, community impacts and work descriptions, check the East County Advanced Water Purification Program’s interactive map on www.eastcountyawp.com or visit @eastcountyawp on social media
It’s always nice to get a thank-you or two from those you work alongside like Recycled Water Supervisor Mike Piper. He recently was handed a card and box of chocolates as a sincere gesture from a young utility worker he had mentored. The worker expressed gratitude for Piper’s guidance and dedication, noting that Piper went above and beyond, even on days off, to help him meet professional standards.
The final segment of the Pure Water pipeline is being installed underwater at the Miramar Reservoir. San Diego’s Pure Water project will supply half of the city’s drinking water by 2035. The city says this is the last segment of the pipeline that will carry purified water from the North City Pure Water Facility through eight miles of pipeline to the reservoir. Crews have already tunneled more than 1,000 feet and now work is underway to finish building the pipeline.
Olivenhain Municipal Water District continues to reduce its imported drinking water demand by converting seven meters within the Village Park Manor condominium community to recycled water.
Encinitas, CA—Olivenhain Municipal Water District continues to reduce its imported drinking water demand by converting seven meters within the Village Park Manor Condominium community to recycled water. Village Park Manor is located in Encinitas and began in December irrigating its common areas using recycled water.
With the successful conversion of the seven meters to recycled water, Village Park Manor will save nearly six million gallons of imported water each year.
The Water News Network is San Diego County’s source for water news and information.
