One Water California


California's water professionals are responding to the State's droughts, declining water supplies and erratic weather with a new philosophy called One Water.

Drinking water, wastewater and stormwater traditionally are managed separately. Today, we view them all as one water. Across the State communities are planning to integrate infrastructure across the water cycle. We're breaking down barriers between municipal departments and asking regulators for flexibility so we can build multi-benefit water projects.

CWEA members believe all water has value and should be managed in a sustainable, inclusive and integrated way.

We call this perspective One Water. By implementing the one water philosophy we can provide enough water for a growing California for generations to come.

This page has a wealth of info on One Water in California. Read, share and contribute.

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"We shouldn't judge water by its history, but by its quality." — Paul Sciuto, General Manager, Monterey One Water

"One Water LA is bringing all of us together to think about water holistically. It connects dots, drops and hearts." - Adel Hagekhalil, Asst Director, City of Los Angeles

"I believe the future will see further acceptance of one-water with less delineation between water and wastewater professions." - Juan Guerreiro, Deputy Director, City of San Diego

One Water California Resources

AC17 Topics: What is the One Water Philosophy?

February 22, 2017

Radhika Fox, CEO of the US Water Alliance and based in San Francisco, will be the facilitator for our AC17 …

Bottoms Up! Purified Recycled Water is Safe to Drink – Santa Clara Valley News

December 5, 2016

Source: Santa Clara Valley News: “Bottoms Up! Purified Recycled Water is Safe to Drink” After 15 months of intensive water …

CWEA Member Adel Hagekhalil Discusses the Los Angeles One Water LA 2040 Plan with Engineering News-Record

November 4, 2016

Story by Scott Blair of Engineering News Record Years of drought and other ever-present threats to infrastructure resiliency have spurred …

DPR: CWEA Member and Member of the State Advisory Group for Direct Potable Reuse, Jim Fiedler Answers Questions about the Future of DPR

October 14, 2016

by Jim Force Direct potable reuse of recycled water would not only provide a new, local sustainable source of water …

DPR: State Water Board’s Cindy Forbes Describes What’s Next for Draft Direct Potable Reuse Regulations

October 12, 2016

State Water Board staff has rolled out the draft report on direct potable reuse (DPR) here in California. It’s technically feasible, but challenging …

US Water Alliance and San Francisco Public Utilities Commission Announce Joint Commitment at White House Water Summit

March 22, 2016

In Honor of World Water Day, the US Water Alliance and City of San Francisco Partner To Advance Onsite Water Reuse …

Los Angeles Basin Section Drought Symposium: One Water – Crafting Reliable & Resilient Water Sources

September 8, 2015

Los Angeles Basin’s ONE WATER Crafting Reliable and Resilient Water Sources Click here to see the flyer! Tuesday, Oct 13th …

One Water Leadership Summit

May 18, 2015

Join the movement toward One Water Management, as we strategize and show models of success in integration, innovation, and collaboration.  …

Sept 23-26: One Water Leadership Summit in Downtown Los Angeles

September 2, 2013

NEW – Discounted $95 one day rate for CWEA members on Thursday Sept 26th. The focus on Thursday is water …