How to Use Powdered Alum to Purify Water

By Damien Thryn
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Alum, also known as potassium aluminum sulfate, can be used to purify water. According to the Environmental Science Activities for the 21st Century Project, water purification is an essential sanitation measure taken to ensure drinking water is clean and safe. Novak and Watts point out that phosphorous is a common contaminant found in water supplies located near livestock shelter and grazing facilities. Alum in its powdered form can be added to water to bind with phosphorous particles to aid the water purification process.

About the Author

Damien Thryn holds a bachelor's degree in political science from the University of California at Berkeley. Specializing in writing on video games, he has played PC games for more than 20 years and has written about many classics. He is also an avid console gamer.