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This page was last edited on 31 October 2017, at 11:40 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may apply.
The first FWPCA was enacted in 1948, but took on its modern form when completely rewritten in 1972 in an act entitled the Federal Water Pollution Control Act Amendments of 1972. [4] [1] Major changes have subsequently been introduced via amendatory legislation including the Clean Water Act of 1977 [5] and the Water Quality Act (WQA) of 1987. [6]
U.S. Route 20 (US 20) in the U.S. state of Illinois is a major arterial highway that runs from the Iowa state line at East Dubuque at the northwestern tip of Illinois to the Indiana state line at Chicago south of the Chicago Skyway, a distance of 233.93 miles (376.47 km). [1]
Resident population of each U.S. state, the District of Columbia, and Puerto Rico in 2022 according to the U.S. Census Bureau [needs update] Average annual population growth rate in each U.S. state, the District of Columbia, and Puerto Rico between 2020 and 2022 according to the U.S. Census Bureau [needs update]
A biosand filter (BSF) is a point-of-use water treatment system adapted from traditional slow sand filters. Biosand filters remove pathogens and suspended solids from water using biological and physical processes that take place in a sand column covered with a biofilm .
U.S. Highway 20 (US 20) is the portion of an east–west United States Numbered Highway in the state of Idaho. It begins northwest of Parma at the Oregon state line and enters Montana 9.6 miles (15.4 km) away from the Yellowstone National Park west entrance. Since 2019, US 20 has been designated as the Idaho Medal of Honor Highway. [3]
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