The U.S. Environmental Protection Agency (US EPA) has approved a new waterway classification system that some environmentalists say will allow more water pollution. Florida previously had five waterway classifications that ranged from drinking water supplies (Class I) to utility and industrial use (Class V). Most waterways have been designated as Class III for fishing and swimming. But the state Environmental Regulation Commission in 2010 approved an additional "Class III Limited" category that provides water quality for only limited recreation and limited populations of fish and wildlife. The US EPA approved the new classification system on September 6, 2011. The Florida Department of Environmental Protection said the new category recognizes that some ditches and altered waterways cannot meet the conditions of a natural water body. The new classification was created so that local governments are not required to spend millions of dollars to improve water quality in ditches and canals.