Resource Watch is a map driven application that provides water quality reports from around the U.S. The method for obtaining data is through the National Water Quality Monitoring Councils' web site using their REST APIs via HTTP. You can create custom queries and re-use them for any geographical location. Users can save their queries, e-mail the reports to anyone they choose, and configure the application to query a wide range of parameters. This application is extremely useful for finding water quality information from any monitoring site or region in the U.S.