Sweetwater to Lower Otay Pipeline Relining Project


Construction Complete

This project completed construction in 2014. Thank you for your patience.



Generally, relining construction rehabilitates segments of pipelines based on their age and the need for improvements. The Sweetwater to Lower Otay Relining Project involved rehabilitating approximately 5.4 miles of large diameter pipeline that traverse the communities of Bonita and eastern Chula Vista (Eastlake, Otay Ranch, as well as the Otay Ranch Preserve and Lower Otay County Park).

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

Now that this project is complete, the Water Authority has rehabilitated approximately 38.9 miles of the existing 82.5 miles of Pre-Stressed Concrete Cylinder Pipe (PCCP). For information on PCCP and the Water Authority’s relining program, please visit www.sdcwa.org/pipeline-relining.

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 Completed Milestones

Construction ended                                          Mid 2014                                   
Construction began September 2013
Project design complete June 2013
Approval of environmental document               March 28, 2013                         
Public hearing - environmental document       January 24, 2013                       
Public review of environmental documents     Dec. 20, 2012 - Jan. 24, 2013
Project design began July 2012                             
Preparation of environmental documents       April 2012                                   

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Project Portal Location Map

Location of Construction Portals (Access Points)

Pipeline relining is conducted in several phases; using portals developed by removing 40-feet of existing pipe to gain access to the interior of the pipeline and install relining materials. These 17 construction portals remain exposed but are gated and secured during construction. Not all portals are active at the same time, however. Work shifts from one portal to another depending on which phase is under way. The contractor usually works in a north to south pattern.

Click the portal numbers below to open a pdf map of the approximate location for that portal.

Portal 1

Between Country Vistas Lane and Cabernet Drive

Portal 2

Between Port Dunbar and Sauterne Place

Portal 3

Near Port Renwick

Portal 4

Between Clearbrook Drive and Suncreek Drive

Portal 5

East end of Gotham Street, within Otay Water District’s water tank site

Portal 6

Between St. Claire Drive and Martinique Dr.

Portal 7

Between Forest Hill Place and LA Fitness

Portal 8

Between Aruba Cove and Eastlake High School

Portal 9

Between Turtle Cay Way and Caminito Leonzio

Portal 10

Between Bear Creek Place and Caminito Turin

Portal 11

Between Knollwood Place and Circulo Brindisi

Portal 12

Just north of Windingwalk St. between the park and Falling Star Dr.

Portal 13

Between Quiet Trail Drive and Trellis Way

Portals 14-16

Southeast of Hunte Parkway in the Water Authority’s easement in the Otay Ranch Preserve

Portal 17

East of the Otay Lakes County Park


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To see photos of past relining projects, please visit the "Multimedia" section of this webpage: http://www.sdcwa.org/pipeline-relining.

An excavator breaks up a section of pipe to establish a portal on a previous relining project


To see videos of past relining projects, please visit the "Multimedia" section of this web page: http://www.sdcwa.org/pipeline-relining.

Pipeline Relining Animation

This animation provides an overview of the pipeline relining process:


Pipeline Relining: Moving Ahead

This video provides an update on the relining program and some visuals from a completed relining project:


Pipeline Relining Overview Video

This video provides an overview of the San Diego County Water Authority’s Pipeline Relining Program:



Other Multimedia Here


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Fact Sheet:
icon_pdf.pngJuly 2013

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Community Presentations

The Water Authority is committed to keeping residents, elected officials, businesses, schools, community groups and organizations in the project area informed about the project. Water Authority staff provided information or presentations to the following stakeholders:

  • Bonita Highlands HOA
  • City of Chula Vista
  • Eastlake I Community Association
  • Eastlake Community Association II
  • Eastlake High School
  • Eastlake Village Center West Commercial Association
  • Otay Ranch 5 HOA
  • Parkway Hills Church of the Nazarene
  • Summit at Eastlake Community Association
  • Sweetwater Community Planning Group
  • Windingwalk HOA
Open House Events:
July 17, 2013: Eastlake High School
July 18, 2013: Eastlake Elementary School
Information Presentations/Updates:
November 26, 2012: Eastlake I Community Association (Introductory Presentation) (click link to access pdf)

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A Mitigated Negative Declaration (MND) under the California Environmental Quality Act is required before starting construction. The Final MND, and Mitigation Monitoring and Reporting Program is publicly available by clicking this link. The documents were adopted by the Board of Directors at their March 28, 2013 meeting at the Water Authority's Kearny Mesa office.

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For more information, please call the 24-hour toll-free project information line at (877) 682-9283, ext. 7005 or email CIPinfo@sdcwa.org. A representative from the project team will return your call within one business day.


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