water purification

Explores how science is being used to create sustainable water.

Describes how cities treat freshwater so that it is safe to drink.

"Readers will learn what it takes to succeed as a wastewater engineer. The book also explains the necessary educational steps, useful character traits, and daily job tasks related to this career, in the framework of the STEAM (Science, Technology, Engineering, Art, and Math) movement. Photos, a glossary, and additional resources are included"--Provided by publisher.

An environmental scientist providing clean water to the city of Philadelphia explains how this water is used to fight fires and to provide water for our homes, parks, and swimming pools. He shows us that river water provided by rain and runoff from farms is dirty and needs to be purified before human beings can use it. In a visit to the Fairmount Water Works he explains the mechanics of how water is brought to plants, purified and sent on to our homes and factories and recalls the extraordinary achievement represented by this historical water purification plant. The episode closes with reasons for all of us to care for the health of our rivers.

Presents information on how cities treat freshwater so that it is safe to drink, following it from underground wells and lakes to the faucet in the home. Includes glossary and photographs.

Describes how water is purified before it comes into the home and the effects of unclean water on the body.

"Discusses the states of water, the natural water cycle, and how water is purified and piped into homes"--Provided by publisher.