Integrated Resource Plan (IRP)

Metropolitan Water District of Southern California

Our region’s water supplies have never been so challenged. Record dry conditions, climate change and environmental problems have limited the supplies imported from the Colorado River and Northern California.

In Southern California, we share the responsibility of ensuring that we have a reliable and high-quality water supply. To prepare for the future, we need a new plan for a new water reality.

An Integrated Water Plan

Examples of Local Projects and New Technologies

Well
Well heads like the North Las Posas well head in Calleguas MWD are used to inject water into the ground for future storage in the conjunctive use program.

Desal
Advanced membrane technology like these reverse osmosis filters are used to treat wastewater for beneficial use, resulting in near-distilled quality water at the Orange County Water District’s Groundwater Replenishment System.

Rio Honda
Spreading Basins like the Rio Hondo desilting pond in Central Basin MWD are used to replenish our groundwater basins.

Click here for more examples

The goal of the IRP is to outline a strategy for water reliability through the year 2030. Metropolitan knows that the tools needed to lower local demand and increase local supplies require a collaborative approach among water districts, local governments and all stakeholder groups.

Public participation is instrumental to the long-term success of a new strategy. The first series of stakeholder forums was held throughout Southern California in September and October to solicit input and feedback.

Click here to view a summary report of the 1st Round of Stakeholder Forums. (102 Kb. pdf)*

Click here to be notified, via email, about future workshops or other special mailings.

What is the IRP? (2,000 Kb. pdf)*
Learn more about Metropolitan's Integrated Water Resources Plan.

IRP Fact Sheet (2,080 Kb. pdf)*

Frequently Asked Questions

Integrated Resources Report 2004 (7,180 Kb. pdf)*
Metropolitan's IRP report is updated every five years.

If you have questions please e-mail IRP.

* All PDF documents on this site require Adobe Acrobat Reader 4.0 or higher. If you do not have Adobe Acrobat Reader, or must upgrade your version, you may download it for free from Adobe's website. If you are using a dial-up modem, please note that many of these documents are large in size and take a long time to open. Use of software other than Adobe Reader may cause discrepancies from the original documents. These risks will be assumed by the reader.