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

Researchers Find Antibiotic-Resistant Genes in Aquifer Replenished by Recycled Water

November 24, 2019

From USC news service A team led by USC Viterbi’s Adam Smith has found that purified water returned to Southern …

LA County Flood Control Offers Grants for Regional Stormwater Projects

October 21, 2019

The Safe, Clean Water Program (SCW Program) is excited to announce the Fiscal Year 2020-21 and 2021-22 Regional call for …

One Water LA 2040 Plan: Trigger-Based Implementation Strategy for Future Integration

October 9, 2019

On July 18, 2019, Ms. Azya Jackson of City of Los Angeles – LA Sanitation & Environment presented the One …

OCWD Greenlights Final Phase of Groundwater Replenishment System

September 15, 2019

The Orange County Water District (OCWD; the District) Board of Directors voted to award the contract to construct the 30 …

One Water LA: A Guide Towards Sustainable & Integrated Water Management  

July 16, 2019

The City of Los Angeles has completed the One Water LA 2040 Plan. A roadmap connecting plans, ideas, and people to …

As Californians Save More Water, Sewers Get Less and That’s a Problem

June 19, 2019

Coverage of asset management topics is supported by MentorAPM This article was produced and published by the Water Education Foundation as …

Valentine’s Day Storm Slams California, Pushing Water Agencies to the Edge

March 20, 2019

“Atmospheric River” is a meteorological term coined in the 1990s that’s recently entered common public usage. They are bands of …

Strengthening Utilities through Consolidation: The Financial Impact

March 5, 2019

Today, the US Water Alliance and the UNC Environmental Finance Center are proud to release a new report, Strengthening Utilities …

Declining Flows: Managing the Consequences of Our Success

February 19, 2019

Coverage of asset management topics is supported by MentorAPM AN INTERVIEW WITH WATER EXPERT PAUL BROWN California’s wastewater systems were designed …

Expert Advice: Key Steps to Public Outreach

February 14, 2019

Public outreach programs can reap multiple benefits for utilities and other public agencies, including community support for projects and utility …

2019 EPA Effective Utility Management Workshop Presentations Available

February 13, 2019

  View this post on Instagram   Some of SoCal water’s best & brightest gathered today at the City of …

Video: LA Sanitation’s Advanced Water Purification Demonstration Facility

January 2, 2019