purification

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.

Explores the issues surrounding water resources, presenting diverse opinions on such topics as access to water, sewage systems, and bottled water.

Discusses water pollution and the risk it poses to the organs of the human body.

Rose Dugan starts receiving death threats demanding that her husband puts a stop to his plans to install a water filtration system in Philadelphia's reservoir, but after a murder takes place, Rose decides to track down the culprit.

Explains the dangers wastewater poses to the environment, discussing how water gets polluted, how it can be cleaned and used again, what the different methods of treating wastewater are, and what children can do to stop water pollution.

Looks at Earth as a water planet, discussing its freshwater and how it is used, describing the many pollutants that are released into the environment and their effect on human health and ecosystems, looking at what is being done to address the problem, and including a case study of water pollution in the Great Lakes.

Explains where waste water goes and how it is purified for reuse.

Traces the journey water makes from, to, and through our homes.