GHG Data and Water-Related Performance Metrics Copy

View Publicly Disclosed Emissions Connected to Water Operations

Participants in the Water-Energy Nexus Registry voluntarily measure, report, verify, and publicly disclose their annual GHG inventories in the Climate Registered Information System (CRIS). Participants who manage water or wastewater operations can also develop performance metrics to disclose the emissions intensity of their water. The disclosure of these metrics will contribute to a more complete understanding of water supply chains and can bolster climate action and data-driven decision making in California’s water sector.

Performance metrics that have been reported to the Water-Energy Nexus Registry and reviewed by a third-party verifier are listed below, and are also available in CRIS.

The performance metrics can be used by both 1) water users, to better understand the emissions embedded in the water products or co-products they receive, and 2) water managers, to better understand the upstream emissions of their water and wastewater management operations.

Click on the expandable boxes below to access participants’ GHG data and performance metrics.

GHG inventory system-average performance metrics product-specific performance metrics

California Department of Water Resources (DWR)

The California Department of Water Resources (DWR) manages California’s water resources, systems, and infrastructure, including the California State Water Project. This 700-mile water storage and delivery system supplies water to more than 27 million people in Northern California, the Bay Area, the San Joaquin Valley, the Central Coast and Southern California, and it irrigates about 750,000 acres of farmland. Read more about how DWR is achieving its climate and GHG reductions goals here.

View 2018 Performance Metrics Report

WEN MetricTypePerformance Metric (mt CO2e/AF)
Anthropogenic Emissions –
Biogenic Emissions –
Anthropogenic Emissions – Delivery0.2494
Biogenic Emissions –

Metrics were developed with Scope 2 Market-Based accounting method.

Metropolitan Water District of Southern California (MWD)

The Metropolitan Water District of Southern California (MWD) is a consortium of 26 cities and water districts that provides drinking water to nearly 18 million people in parts of Los Angeles, Orange, San Diego, Riverside, San Bernardino, and Ventura Counties. The mission of MWD is to provide its service area with adequate and reliable supplies of high-quality water to meet present and future needs. You can learn more about their environmental sustainability efforts here.

For more information on developing carbon and water footprints, developing and using performance metrics, and benchmarking emissions over time, contact the WEN Registry staff at or 866-523-0764.