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Total Maximum Daily Load (TMDL)

The passage of the federal Clean Water Act in 1972 established the water standard qualities and the total maximum daily load (TMDL) ceiling. The TMDL is intended to maintain the quality standards of water. To do so, TMDL is set to control the amount of pollutants that are allowed to flow into a given water source. The TMDL is calculated by adding the allowed pollutant loads for point sources, nonpoint sources, projected growth, and a margin of safety, resulting in a sum that is the TMDL.

Every state is responsible for its own water quality levels by establishing its own TMDL. However, if the state fails to do so, the U.S. Environmental Protection Agency (EPA) is then responsible to prevent pollution to the water. Because TMDL ...

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