Irvine Lake Pipeline Conversion Project

Irvine Lake Pipeline Conversion Project

The Irvine Lake Pipeline Conversion Project will transform the northern portion of IRWD’s Irvine Lake Pipeline from an untreated water system to a recycled-water system. Contractors are constructing a buried concrete reservoir off of Santiago Canyon Road and installing 42-inch-diameter recycled-water pipelines under Santiago Canyon Road and Jamboree Road.

Once complete, the system will deliver recycled water to Orange and northern Irvine, primarily for landscape irrigation. This project is part of the IRWD strategic plan to increase recycled water use and reduce reliance on imported water. Every gallon of recycled water used frees up a gallon of drinking water for homes and businesses.

Roadwork will affect traffic for several months in 2018. Details in the project updates section below:


Project Information

Traffic Impact and Project Map+
Project Updates+
Contact Information+


Latest News

Happy to See Green? Thank Our Purple PipesLet’s be honest. We love our treelined streets, verdant medians and common areas that define the Irvine Ranch Water District. And while other communities are cutting back on their landscaping, ours continues to flourish. Since 1963, IRWD has been implementing a...
Chilling with Recycled Water: IRWD, UCI Save 80 Million Gallons of Drinking Water a YearUC Irvine and Irvine Ranch Water District officials toss ceremonial buckets of water into the cooling towers to kick off the new project. (Shown here, right to left, are UCI Associate Chancellor for Sustainability Wendell Brase, IRWD Board President Douglas...
How the IRWD Team Safeguards Your WaterThanks to all of the IRWD customers who joined us July 10 for our Tap Water 101 community workshop. If you missed it, check out our new 3-minute video, “Journey of a Water Sample.” You’ll tag along with real IRWD...