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Water -- Purification -- Filtration.

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View Resource Filtering Water

The first site related to water filtration is from the US Environmental Agency entitled EPA Environmental Education: Water Filtration (1 ). The two-page document explains the need for water filtration and the steps water treatment plants take to purify water. To further understand the process, a demonstration project is provided that illustrates these purification steps, which include coagulation,...

https://scout.wisc.edu/report/nsdl/ps/2003/0418