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Water Authority Begins Pipeline 5 Repairs in North San Diego County

Next week, San Diego County Water Authority staff and contractors will begin crucial repairs on Pipeline 5 in rural North County between Fallbrook and Escondido.

The work is part of the Water Authority’s proactive asset management program, which monitors and maintains the condition of regional water infrastructure that includes 310 miles of large-diameter pipelines. The Water Authority’s approach, coordinated closely with its member agencies, has served the region well by avoiding large-scale, unexpected water outages for more than a decade.

Asset management program responds quickly to pipeline needs

After a leak in nearby Pipeline 4 was discovered in Moosa Canyon last summer, Water Authority staff assessed the conditions of Pipelines 3 and 5, which run parallel to Pipeline 4 as part of the Second Aqueduct. The assessment showed that a section of Pipeline 5 in Moosa Canyon was also under significant stress.

“Due to the very high operating pressure and the major consequences of potential failure of Pipeline 5, our staff immediately began planning a shutdown and repairs to mitigate risks,” said Jim Fisher, director of operations and maintenance at the Water Authority. “Our asset management program is designed to identify potential problems and respond quickly.”

After a leak in nearby Pipeline 4 was discovered near Moosa Creek last summer, Water Authority staff assessed the conditions of Pipelines 3 and 5, which run parallel to Pipeline 4 as part of the Second Aqueduct. Photo: San Diego County Water Authority

After a leak in nearby Pipeline 4 was discovered near Moosa Creek last summer, Water Authority staff assessed the conditions of Pipelines 3 and 5, which run parallel to Pipeline 4 as part of the Second Aqueduct. Photo: San Diego County Water Authority

Constructed in 1982, Pipeline 5 is a vital component of the Water Authority’s water system, delivering untreated supplies from Lake Skinner in southwest Riverside County to the Lower Otay Water Treatment Plant in southern San Diego County. The operating pressure exceeds 400 pounds per square inch in Moosa Canyon.

Carbon fiber technology extends pipeline life

Repairs will require that a section of Pipeline 5 in North County be shut down from March 30 until mid-May. Crews will start by installing bulkheads that isolate the Moosa Canyon section. Then, they will line the inside of the pipe with a carbon fiber liner, as was done to rehabilitate Pipeline 4. The carbon fiber liner will reinforce distressed areas and extend the life of the 96-inch, pre-stressed concrete cylinder pipeline.

The asset management program is a key element of the Water Authority’s commitment to providing a safe and reliable water supply to San Diego County. By making preventative repairs, the Water Authority ensures that water service will continue throughout the county.

Planning study seeks long-term solutions

Over the next 18 months, Water Authority staff will conduct a planning study to evaluate improvements required for all three pipelines in Moosa Canyon to ensure the long-term reliability of the Second Aqueduct. The results of the study will include recommendations about future projects as part of the Water Authority’s capital improvement program.

Olivenhain Municipal Water District Logo landscape design workshops

Pipeline Construction Scheduled to Begin Along North El Camino Real Next Week

Encinitas, CA—Olivenhain Municipal Water District will begin construction to replace aging water infrastructure in El Camino Real the week of March 23. To reduce traffic impacts, all work will take place at night, between 8:00 p.m. to 6:00 a.m., Monday through Thursday.


Trump Admin Fast-Tracks Colorado River Pipeline

The Trump administration has put one of the largest new water projects on the Colorado River on the fast track, raising concerns among environmentalists.

Utah first proposed building a 140-mile pipeline from Lake Powell on the Utah-Arizona border more than a decade ago. The plan, however, was waylaid by environmental and other reviews during the Obama administration.

But last fall, the Utah Division of Water Resources updated the proposal, removing a hydropower plant and cutting $100 million from its price tag.

The move also changed which federal agency had jurisdiction over it — from the Federal Energy Regulatory Commission to the Bureau of Reclamation.

FPUD Awards Contract for Winter Haven Road Pipeline Replacement

The Fallbrook Public Utility District pipeline along Winter Haven Road will be replaced.

FPUD’s 4-0 board vote Dec. 9, with Don McDougal absent, approved the contract with Kirtley Construction for the San Bernardino company’s bid of $750,400.

Environment Report: The Earthquake Risk No One’s Talking About

San Diego faces a hidden earthquake threat — to its water supply. A quake, even one so far away that nobody in San Diego feels it, could cause an emergency and force mandatory water-use restrictions. That’s because most of San Diego’s water comes from hundreds of miles away through threads of metal and concrete that connect us to distant rivers and reservoirs.

Study To Assess Regional Pipeline For Delivering Colorado River Water

A new study will explore the viability of a regional pipeline to transfer water from the Colorado River to benefit multiple users in San Diego County and across the Southwest. The San Diego County Water Authority’s Board of Directors approved funds for the two-year study at its June 27 Board meeting. The pipeline system is one of a handful of ideas being discussed by San Diego County water leaders to enhance partnerships and solutions that make sense locally and more broadly as part of Governor Newsom’s Water Portfolio Program to develop resiliency statewide.

High-Tech Tools Help Detect Possible Pipeline Problems

It’s a whole new ballgame for the San Diego County Water Authority when it comes to finding leaks in major pipelines with cutting-edge technology. One new tech tool deployed for the first time in February actually looks like a tennis ball that floats through water-filled pipelines scanning for potential trouble. Of course, the new device is much more complex inside than a tennis ball – in fact, the Nautilus is among the most advanced tools of its kind in the world. It not only detects defects that are invisible to the human eye, it does so without requiring pipes to be drained, which saves a significant amount of water and disruption to customers.

Pipeline Rehab Project Coming To La Jolla Shores And La Jolla Heights

By the beginning of May, areas of La Jolla Shores and La Jolla Heights will undergo a pipeline replacement project — in piecemeal segments — to replace or rehabilitate more than seven collective miles of underground sewer lines. Arterial streets east of La Jolla Shores Drive, portions of Torrey Pines Road, some of La Jolla Scenic Drive North, and other smaller streets are slated for work.

Pipeline 5 Upgrades Begin in Fallbrook

A $25.3 million Pipeline 5 relining project is under way in North County to improve the reliability of the San Diego region’s water delivery system. The project involves rehabilitating approximately 2.3 miles of one of the San Diego County Water Authority’s regional wholesale water pipelines in eight segments along a 9.5-mile stretch through the community of Fallbrook. Construction work will be done in phases and completed in summer 2019. When finished, the Pipeline 5 Relining Project will help extend the service life of this vital piece of infrastructure for more than 75 years. Generally, relining construction rehabilitates segments of pipelines based on their age and the need for improvements.

Agency Embraces Innovation At Technology Showcase

San Diego, Calif. – Welcome to the future. That’s the message from the San Diego County Water Authority, which is developing and deploying cutting-edge techniques to maintain its 310 miles of giant pipes that provide water for 3.3 million residents across the region. “This is all about assessing the condition of our pipelines through the most advanced technology at our disposal and performing repairs before age-related defects become an unforeseen issue,” said Martin Coghill, a senior water resources specialist for the Water Authority.