The Water Replenishment District

manages groundwater for nearly
four million residents in 43 cities of Southern
Los Angeles County and is the official
Groundwater Level Monitoring
for the Central Basin and West Coast Basin.

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

Cost of Service Report, 2016

The 2016 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

The report also presents the proposed Replenishment Assessment (RA) needed to provide these services. A Public Hearing on the RA will be held on Thursday, April 28, 2016, at 12:00 p.m. at the District.

To obtain a copy of the report, click on the following link - COSReport.pdf. Note that the report is formatted for double-sided printing and is over 30 mb in file size. To request a hard copy of the report please contact the District.

To obtain a copy of the accompanying memorandum from the General Manager, click on this link COSMemo.pdf.

Budget Workshops

The Water Replenishment District is undergoing its annual budget process beginning in February and continuing into May 2016. Meetings are open to the public and all are invited to attend. The WRD Board of Directors values the input of all our stakeholders and invites you to provide your comments. We look forward to seeing you.

Download Flyer >>

2016 WRD Engineering Survey and Report

Click here to download the WRD Engineering Survey and Report that was received and filed by the Board of Directors on March 3, 2016. The download is in PDF and has been formatted for double-sided printing. Please contact the District if you would like a hard copy of this report.

Regional Groundwater Monitoring Report 2014-15

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 monitoring wells at over 50 locations throughout the District.

This Regional Groundwater Monitoring Report presents information on groundwater levels and groundwater quality for the previous water year which runs from October 1 through September 30 of each year. This current report is for water year 2014-15. Download Report >>

Water Recycling Promises to Ease Impact of Long-Term Drought

WRD Board President Albert Robles Among Top 100 Green Latinos in U.S.

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.

Full Story >>

Vander Lans Expansion Engineering Report

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.
This amended Engineering Report for the Vander Lans Facility presents the overview and technical details involved in implementing the design of these new facilities.



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.. >>

Financial Awards

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 nine years in a row.

Don't Throw Household Waste in the Trash!

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.

Bond Rating

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

"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

Safe Drinking Water Project

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

water replenishment district newsletter groundwater calendar california groundwater
Groundwater Basins Master Plan

2016 Budget Advisory Committee Election Results

Category A

Liberty Utilities (formally Park Water Company)
Pico Water District

Category B

City of Lakewood
City of Torrance

Category C

City of Long Beach
Los Angeles Department of Water and Power
California Water Service Company



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