1. Clean Watersheds Needs Survey 2008—report to congress;USEPA,2010
2. WRF. electricity use and management in the municipal water supply and wastewater industries;EPRI,2013
3. Energy-water Nexus: the water sector’s energy use;Copeland,2014
4. USEPA. Greenhouse gas equivalencies calculator. Washington, DC: 〈http://www.epa.gov/cleanenergy/energy-resources/calculator.html〉.
5. Ensuring a sustainable future: an energy management guidebook for wastewater and water utilities;USEPA,2008