Project Background

Sweetwater to Lower Otay Pipeline Relining Project Complete

The Sweetwater to Lower Otay Relining Project involved rehabilitating approximately 5.4 miles of large-diameter pipeline  that traverses the communities of Bonita and eastern Chula Vista, including Eastlake, Otay Ranch, Otay Ranch Preserve and Lower Otay County Park. The project was completed in 2014.

The construction crews conducted most of the work underground, inside the pipe. They accessed the pipe by excavating, establishing and entering the pipeline through 17 access sites, or portals. Large wooden sound walls were temporarily placed at portals to comply with environmental regulations and ease noise impacts to residents.

At the time this project was completed, the Water Authority had rehabilitated approximately 39 miles of the existing 82.5 miles of pre-stressed concrete cylinder pipe in the regional water delivery system.

Learn  more about the Water Authority’s pipeline relining program.