Addressing Climate Change

Diamond Valley Lake Dusk

Addressing Climate Change

Climate change is a monumental challenge to the reliability of Southern California’s water supplies. Every watershed the region has depended on, from the Colorado River to the Sierra Nevada, to those that feed our own groundwater basins, is becoming less reliable. Metropolitan has long recognized this threat, and we’ve been preparing for more than two decades through our Integrated Water Resource Plan. We’ve invested in local supplies, developed new storage, and increased our system’s flexibility to take advantage of water when it’s available from our diverse sources. We’ve also taken big steps to minimize the effects of climate change by reducing our greenhouse gas (GHG) emissions — a commitment we’re furthering through our Climate Action Plan.

Through a highly collaborative process, Metropolitan has adopted a Climate Action Plan detailing how we will strengthen our commitment to environmental sustainability, increase the resiliency of operations and provide a pathway to achieve our ultimate goal of carbon neutrality.  Read the final Climate Action Plan.

As we face unprecedented and challenging times of historic dry conditions and shortage declarations for our imported water supplies, Metropolitan is committed to ensure that all portions of our service area have a high level of reliability.

Our board has pledged to identify and implement measures to ensure that these demands are met with considerations to system improvements, local water supply development, new storage and programs to increase conservation. Read our regional outlook on addressing these concerns.

A Challenge at Every Source

Climate change is expected to increase average temperatures across the western United States. In the Colorado River Basin, that means decreased runoff and lower flows as less snow is coupled with more demand from trees and plants. In the Sierra Nevada, precipitation will increasingly fall as rain in a few large storms, rather than snow. Sierra snowpack — long a critical storage tool in California’s water management as it holds water high in the mountains until peak summer demand — is expected to decrease by up to 65 percent by the end of the century. And locally, climate change threatens groundwater basins with saltwater intrusion and less natural replenishment.

Man on snow survey 2020

Climate Action Plan: Reaching Carbon Neutrality

Metropolitan isn’t just adapting to climate change as it comes, we’re also taking important steps to keep it from worsening. We’ve joined state and local leaders to help minimize the effects of climate change by committing to reduce GHG emissions.

Metropolitan's Climate Action Plan establishes a feasible pathway to achieve the state's target of 40 percent below 1990 levels by 2030 and Metropolitan's goal of carbon neutrality by 2045.

Target projection

What is the Climate Action Plan?

The Climate Action Plan includes an inventory of Metropolitan’s historic and current GHG emissions, as well as a comprehensive forecast of future projected emissions. The data is then used to identify a feasible GHG reduction target and GHG reduction measures that Metropolitan can implement to achieve its goal. The adopted Climate Action Plan serves as a long-term planning document that will guide policy and planning decisions on operations, water resources, capital investments, and conservation and resource programs.  Member and local agencies can use this the document to consider local policies and programs.  It also allows Metropolitan to streamline the environmental review process and mitigate GHG impacts for future capital projects under the California Environmental Quality Act.

Other key benefits:  

  • Integrates legislation and guidance from state, federal, and international sources
  • Saves Metropolitan money through energy efficiency
  • Provides dual benefit of improved operational resilience and air quality improvements 

“The impacts on our water supplies will change the way we provide our services and operate our water system. The Climate Action Plan will ensure we are part of the solution to prevent further stresses to our climate.” 

Adel Hagekhalil, Metropolitan General Manager 

Metropolitan’s Carbon Budget

It takes a lot of energy to move water. That energy is used to transport water from our imported water sources located hundreds of miles away, and to treat and distribute water throughout our service area.   Metropolitan’s greenhouse gas emissions fluctuate from year to year depending on the amount of water pumped from the Colorado River. Because pumping operations vary depending on need and availability each year, emissions in one year may not be representative of Metropolitan’s overall progress toward meeting its GHG emissions reduction targets.  To account for this, Metropolitan is tracking its emissions over time using a carbon budget.


Track Our Progress

Metropolitan has partnered with CAPDashTM, a web-based tool that allows the public to view our progress toward our GHG emission reduction targets. Data is categorized by various strategies Metropolitan is employing, from operational fuel use to employee commuting, and is visualized in interactive charts and graphics that facilitate greater transparency.

Visit the Metropolitan CAPDashTM Portal

On the Path to Sustainability

Our Climate Action Plan will help get us to our goal of carbon neutrality, but we’ve been on the path for decades. Our environmental awareness began with our founding in 1928, when our planners and engineers designed the Colorado River Aqueduct to deliver water primarily by gravity across 242 miles of California desert to the state’s south coastal plain. Those same planners recognized the need for a reliable supply of power, investing in construction of Hoover Dam and Parker Dam, which together supply more than half of the energy needed today to power the CRA pumps with clean, carbon-free energy.

That same forward-thinking ingenuity imbues Metropolitan’s continued investments in clean energy and energy-efficient design to reduce our greenhouse gas emissions.

Transmission towers energy

How To Get Involved

Visit this site for opportunities to join the conversation. Metropolitan plans to connect with the community during the Climate Action Plan process to share information and insights with interested individuals and organizations.


Follow Our Progress