Answer:
For example, let's take the 33 U.S.C. §1251 et seq. (1972) law, known as the Clean Water Act. It's main concern is the regulation of pollutants and general quality standards of the US water supply. Most factories and companies have to use water in the process, or are lured to discard waste in the running waters. This law forbids those practices, unless a special permit is granted. Usually, they let factories dispose water remains in the running water after a special and thorough filtering process.
Therefore, factories are forced to explore the more greener options of the manufacturing process, taking into consideration the water resource.
