The United States uses 42 billion gallons of water a day-treated to meet Federal drinking water standards-to support a variety of needs. The Safe Drinking Water Act (SDWA) not only contains Federal authority for regulating contaminants in drinking water delivery systems, it also includes the Drinking Water State Revolving Fund (DWSRF) program. The DWSRF was created to provide financing for infrastructure improvements of drinking water systems. Chapter 1 looks at our Nation's drinking water infrastructure structure and examine questions as to what is necessary for the Federal Government to do in the way of planning, reinvestment, and technical support of these systems to meet future needs. Drinking Water System Improvement Act of 2017 amended the Safe Drinking Water Act to improve public water systems as discussed in chapter 2.