EPA Releases Draft “Climate Change Vulnerability Assessment: Four Case Studies of Water Utility Practices”
Monday, August 23rd, 2010EPA released a draft document prepared by its National Center for Environmental Assessment entitled, “Climate Change Vulnerability Assessment: Four Case Studies of Water Utility Practices.” In a Federal Register Notice dated August 23, 2010, EPA announced a 45-day comment period, ending October 7, 2010.
The draft vulnerability assessment describes approaches taken to review the vulnerability of water utilities to future climate change. The assessment discusses different types of models, analyses and climate change information being developed by four major water utilities that are leaders in climate change adaption. The utilities selected for the case studies are-
- East Bay Municipal Utility District (Contra Costa and Alameda Counties, CA)
- New York City Department of Environmental Protection (New York, NY)
- Seattle Public Utilities (Seattle, WA)
- Spartanburg Water (Spartanburg, SC)
Each utility used different research techniques based on their location, population, and seasonal weather patterns and reached different outcomes. Nevertheless, the study highlighted many similarities related to the utilities’ vulnerability to climate change. Key climate change risks included reduction in water supplies, change in timing of runoffs, changes in sea level and sewer overflows and increases in droughts.
Some of the more notable observations NCEA made from the four case studies include-
- Conducting the assessment increased climate change risk awareness, informed decisions within the utility and provided support for adaptive measures to be taken;
- Different models may be used to better understand not only the future of climate change, but also managing and understanding the dynamics of the utilities’ systems;
- Each utility expressed an interest in receiving further information on the future of climate change and requested that their needs be reflected in future;
- Notwithstanding the uncertainty of climate change, these utilities better understand the risks they may face in the future and their capabilities to prevent problems.
Click here read more about the findings and readings of these four case studies and to read how each individual utility conducted their research finding. Also for more information on how to submit a comment with EPA on this draft, click here.
