of downstream communities. (7) Restoring the protection of the network of streams, rivers, lakes, and wetlands, and other waters of the United States, is necessary to restore and maintain the chemical, physical, and biological integrity of all waters in the United States. (8) Recent events demonstrate how increased pollution in and degradation of streams, rivers, lakes, and wetlands, and other waters of the United States, can cause catastrophic harm to communities’ health and economic strength, such as— (A) the 2014 harmful algal bloom in western Lake Erie, which resulted in a three-day shutdown of the drinking water supply of Toledo, Ohio, affecting approximately 500,000 people