EPA has released the Containment and Disposal of Large Amounts of Contaminated Water: A Support Guide for Water Utilities. The guide serves as a reference document for the preparation and response to a contamination event when rapid decision making is needed. It provides recommendations primarily to drinking water, wastewater and stormwater utilities following an all-hazard chemical, biological, and radiological (CBR) contamination event. Secondary users of the guide are decision makers involved with planning and disposal at the federal, state, local and tribal levels.