Work is progressing toward completion on the first of two pipeline replacement projects in Encinitas by Olivenhain Municipal Water District.

Replacement of an existing drinking water pipeline is wrapping up at Rancho Santa Fe Road and Encinitas Boulevard, with completion expected in early 2022. The original pipeline was installed in 1961 and was approaching the end of its lifespan. Proactively replacing aging water pipelines prevents leaks and avoids emergency shutdowns.

“Water main breaks can waste millions of gallons of treated water while requiring costly emergency repairs,” said Bob Topolovac, Olivenhain Municipal Water District Board director. “That is why this project is critical in ensuring safe and reliable water delivery to our customers.”

Pipelines being replaced include:

• Approximately 1,900 linear feet of 12-inch pipeline in Manchester Avenue from Colony Terrace north to Encinitas Boulevard
• Approximately 450 linear feet of 12-inch pipeline in Encinitas Boulevard west of Rancho Santa Fe Road
• Approximately 500 linear feet of 12-inch pipeline in Rancho Santa Fe Road north of Encinitas Boulevard
• Approximately 850 linear feet of eight-inch pipeline in South Rancho Santa Fe Road

To minimize the impact on the surrounding community, construction is taking place mainly at night, except in residential areas where work takes place during the day.

Learn more about the project and upcoming work in 2022 in this video

Recycled water pipeline helps reduce drinking water demand

In early 2022, the water district will begin its second project, installing 1.4 miles of six-inch recycled water pipeline under Manchester Avenue and S. El Camino Real. When completed, recycled water will be connected to the San Elijo Joint Powers Authority’s Recycled Water Pipeline and North Plant. It will be part of the North San Diego Water Reuse Coalition’s Regional Recycled Water Project.

Homeowner associations, schools, and businesses along the project alignment that are currently using potable water for landscape irrigation will be able to take advantage of this lower-cost, drought-resistant local source of water for irrigation. These new customers connecting to this pipeline will reduce the need for 10 million gallons of potable drinking water per year.

Multiagency coordination on pipeline replacement

The pipeline will be installed along Manchester Avenue between Via Poco and Tennis Club Drive. Since Caltrans is working at I-5 and Via Poco, the water district is coordinating its work with Caltrans to minimize traffic impacts to the Manchester Avenue Corridor.

Construction is expected to take nine months. The project received approximately $1.75 million in state and federal grant funding, reducing costs for its ratepayers.

Prior to construction in summer 2021, the Olivenhain Municipal Water District hosted a virtual neighborhood meeting. Staff provided project details and steps that will be taken to reduce impacts to the community and sought input from members of the public. Video of the meeting can be viewed here. (NOTE: some of the scheduling information has changed).

The project is expected to be completed in early 2023. Project updates can be found at www.olivenhain.com/projects. For questions or concerns, email or call 760-632-4235.

(Editor’s note: The Olivenhain Municipal Water District is one of the San Diego County Water Authority’s 24 member agencies that deliver water across the metropolitan San Diego region.)