also point to the need for organized and practiced emergency procedures and preparedness. Since 2002, under the Bioterrorism Act, a water utility supplying more than 3,300 people must take at least the following measures to ensure security of the water supply: Conduct an assessment of the facility's vulnerabilities to vandalism, insider sabotage, or terrorist attack, and submit the report to the EPA. Show that the facility has an up-to-date emergency response plan, should an incident occur. More recently, under the Drinking Water Security Act of 2009, the EPA is now required to establish risk-based performance standards for community water systems serving more than 3,300 people. See also Bottled water in the United States Environment of the United States List of water supply and sanitation by country References Further reading EPA Alumni Association: Drinking Water, Half Century of Progress – a brief history of U.S. efforts to protect drinking water External links Ground Water and Drinking Water – EPA EPA Wastewater Permit Program – NPDES Rural Water Supplies and Water Quality Issues – Centers for Disease Control (CDC) Public Water Systems – Water Sources – CDC ReNUWIt, Engineering Research Center for Re-inventing the Nation's Urban Water Infrastructure National Rural Water Association