The 420 square mile service area uses about 250,000
acre-feet of groundwater per year taken from the
aquifers of the Central Coast and West Coast Basins.
This equates to nearly 40% of the total demand for water.
WRD is involved in groundwater monitoring, safe drinking
water programs, combating seawater intrusion and
groundwater replenishment operations throughout
Southern Los Angeles County.
Service Area Map

The latest edition of Poder 360deg released its list of the Top 100 Latino Environmental Leaders and selected Albert Robles, Board President of the Water Replenishment District of Southern California (WRD).
Robles, who is serving in his second consecutive term as Board President, was chosen for his outstanding leadership on environmental regulation.
WRD has been monitoring the Central Basin and West Coast Basin for over 50 years, and this year's annual report presents the most comprehensive information to date as a result of WRD's growing network of aquifer-specific monitoring wells and in-depth water quality analysis. The Regional Groundwater Monitoring Program currently consists of a network of nearly 300
WRD is expanding the production capacity of the Leo J. Vander Lans Advanced Water Treatment Faciliy to replace the use of imported water in South Los Angeles County. WRD currently receives tertiary treated recycled water from the adjacent Los Angeles County Sanitation District’s Long Beach Water Reclamation Plant. In order to ensure a sufficient supply of source water to meet the expansion requirements of the Vander Lans Facity, WRD will also use tertiary effluent from LACSD’s Los Coyotes Water Reclamation Plant in the future.
The WRD Cost of Service Report is now available. The report describes the WRD history, hydrogeology, and service area boundaries, and presents information on the projects, programs, administration, and water related activities needed in the ensuing Fiscal Year to meet the mission of the District of providing safe and reliable groundwater
WRD's 2013 Engineering and Survey Report documents the past, current, and ensuing year groundwater conditions in the Central Basin and West Coast Basin ("CBWCB").
The Water Independence Now (WIN) program is a series of projects that will fully utilize stormwater and recycled water sources to restore and protect the groundwater resources of the Central and West Coast Basins. In the past, a large percentage of replenishment water came from sources in Northern California and the Colorado River.
WIN seeks to completely eliminate this dependence on imported water to ensure the future security of our region by developing local resources to create a locally sustainable groundwater supply.. >>
The Water Replenishment District has been awarded the prestigious Government Finance Officers Association (GFOA) Certificate of Achievement for Excellence in Financial Reporting for outstanding budget presentation and process for six years in a row.
If you have household hazardous waste please dispose of it properly. Click here to learn more.
GRIP is a component of the WIN program that will replenish the groundwater of the Central Coast Groundwater Basin. GRIP is a partnership between WRD and the Sanitation District of Los Angeles County.
Standard and Poor's and Fitch Rating: AA+
"Along with WRD's longstanding mission of preserving and protecting the local Basins with high quality groundwater, the District strives to maintain high financial standards which have resulted in achieving AA+ ratings from both Standards & Poor' s and Fitch."
- Albert Robles
WRD Board Treasurer
"This AA+ rating recognizes the outstanding efforts that the District undertakes in the management of public resources. This rating is a testament to the District's continuing efforts to fiscal responsibility and public transparency."
- Sergio Calderon
WRD Board President
WRD's Safe Drinking water Program offers assistance to pumpers for treating contaminated groundwater. This allows affected wells to meet public drinking water standards and lessens the probability of contaminated water affecting other wells.
More information
Saturday, July 20, 2013 - Drip & Sprinkler Care
Saturday, August 3, 2013 - Sustainable Garden Care