Water is the Next Carbon
At every sustainability conference I’ve been attending lately, I keep hearing about the importance of water and even how it trumps carbon. That’s why this blog post is dedicated to one of our most critical resources. “Water sustains agriculture and, thus, our food chain. Vast quantities of water are used to make the silicon chips that help power our computers and cell phones. Electric power plants depend heavily on water, and account for a staggering 39 percent of freshwater withdrawals in the United States. It could be said our economy runs on water.” 1
Demand for water is projected to outstrip supply by a staggering 40 percent by 2030, and an estimated half the world’s population are likely to live in areas of high water stress by the same year.2
Do you know your water footprint? The table below contains water footprint data for various industry sectors and was obtained from a report published by Ceres/Pacific Institute.1

blue water footprint is the volume of freshwater that evaporated from the global blue water resources (surface water and ground water). green water footprint is the volume of freshwater evaporated from the global green water resources (rainwater stored in the soil as soil moisture). grey water footprint is the volume of polluted water, calculated as the volume of water that is required to dilute pollutants to such an extent that the quality of the water remains above agreed water quality standards Source: Ceres/Pacific Institute, “Water Scarcity and Climate Change, Growing Risk for Business and Investors,” 2009.
Do you have the tools for a water assessment? The Ceres Aqua Gauge is designed to enable investors and companies to better understand water risks and the practices used to manage them. The Aqua Gauge can benefit a range of decision-makers across the investment value chain.
Specifically, it can help with:
- Self-assessment and strategy development
- Investor communications and engagement
- Supplier and industry engagement
Actions to Take Now
- Perform a water risk assessment
- Utilize the Ceres Aqua Gauge Tools
- Develop a water strategy
- Participate in the Carbon Disclosure Project (CDP) Water Project
References:
- CERES/Pacific Institute, “Water Scarcity and Climate Change, Growing Risk for Business and Investors,” 2009. http://www.pacinst.org/reports/business_water_climate/full_report.pdf
- CDP Water Disclosure https://www.cdproject.net/water
- CDP Water Disclosure Global Report 2011 https://www.cdproject.net/CDPResults/CDP-Water-Disclosure-Global-Report-2011.pdf
- Ceres Aqua Gauge http://www.ceres.org/issues/water/aqua-gauge/aqua-gauge
- US EPA WaterSense http://www.epa.gov/watersense/index.html
- Water Footprint Network http://www.waterfootprint.org/?page=files/home


