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In the mid 20th century, the St. Louis River became one of the most heavily polluted waterways in the state. It became an Environmental Protection Agency Area of Concern. The river began to be cleaned up when a new wastewater treatment facility was completed in 1978Events January January 1 The Copyright Act of 1976 takes effect, making sweeping changes to United States copyright law. January 1 Air India's Boeing 747 explodes near Bombay 213 dead. January 4 Referendum in Chile supports policies of Augusto Pinochet. as part of the Western Lake Superior Sanitary District . Through the 1980sMillennia: 1st millennium 2nd millennium 3rd millennium Centuries: 19th century 20th century 21st century Decades: 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s 2030s Years: 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 Events and trends and 1990sCenturies: 19th century 20th century 21st century Decades: 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s 2030s 2040s Years: Events and trends Computers, technology Explosive growth of the Internet; decrease in the cost of computers and other techn, additional cleanups took place, and the river is now significantly less polluted.

1 See also

• List of Minnesota riversThis is a list of rivers in the state of Minnesota in the United States Cedar River Cottonwood River Crow River Crow Wing River Des Moines River Long Prairie River Minnesota River Mississippi River Pigeon River Platte River Pomme de Terre River Rainy Rive

2 External links

• St. Louis River Citizens Action Committee
• Great Lakes Areas of Concern: St. Louis River