Wilson Street Pipeline Replacement Project

Project Background

Committed to providing 100% safe, local and reliable drinking water, Mesa Water District (Mesa Water®) will replace the underground steel pipeline on Wilson Street from the Newport Boulevard intersection to the Harbor Boulevard intersection in Costa Mesa. The existing pipeline was installed in 1951 and needs to be replaced due to its age. It is approximately 4,580 linear feet in length – nearly a mile.


Construction will take place from 8:30 a.m. to 3:30 p.m. Monday through Friday, and will be completed by Spring 2022. Following the completion of Mesa Water’s Wilson Street Pipeline Replacement Project, the City of Costa Mesa will begin resurfacing Wilson Street.

The current 12-inch cement mortar-lined and coated (CMLC) pipeline will be replaced by a new 12-inch polyvinyl chloride (PVC) pipeline. Project work will also include upgrades involving pipelines at street intersections, existing service lines, underground meter boxes and fire hydrants.

Potential Construction Impacts

Traffic will be accessible in both directions and/or detoured during the partial lane closure near the areas where the new pipeline is being installed. Other potential impacts during construction include temporary bus stop closures/relocation, temporary parking restrictions and minimal dust, noise and vibration.

There will be periods of night work from 9 p.m. to 6 a.m., Monday through Friday, at the intersections of Wilson Street and Harbor Boulevard and Wilson Street and Fairview Road.

The existing pipeline system will remain in service while the new pipeline is being constructed. There will be no disruption in water service to customers during construction, although some customers may experience a short-term interruption to their water service next year when the existing service line is connected to the new pipeline. Every effort will be made to notify customers of any potential interruptions.

For a PDF version of the Fact Sheet click here.

For Wilson Street FAQs click here.

Click below for the latest construction notices.

October 14, 2021
August 11, 2021

Please check back for updates.

SCADA Control Room and Wet Lab Upgrade

Mesa Water District’s construction of the SCADA Control Room and Wet Lab Upgrade at its Mesa Water Reliability Facility (MWRF) will resume in October. The new facility will allow Mesa Water staff to host educational programs and tours at the MWRF.

Click below for the latest construction notices.

August 19, 2021

Please check back for updates.

New Wells and Pipeline Project

Chandler Well Rendering

Chandler Well 12 - aerial view

Crody Well Rendering

Croddy Well 14 - street view

Committed to providing safe, high-quality drinking water, Mesa Water District (Mesa Water®) will construct two new potable water wells and a pipeline in Santa Ana. The wells will allow Mesa Water to increase local water production capacity. Construction will begin in August 2020.

For a Fact Sheet click here.

Latest Construction Notices

Chandler Well 12

April 26, 2021
February 23, 2021
August 6, 2020

Croddy Well 14

June 7, 2021
January 29, 2021
October 6, 2020
August 6, 2020

Please check back for updates.