Let's Look at Water (1947)

Let's Look at Water (1947)

1947-01-01 Canada 21 Min. PG-13
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Overview

This short documentary shows how a city's water supply is purified at a filtration plant. The complex system of the underground mains that supply all parts of the city with water is also illustrated, as is the safeguarding of water supplies on trains, ships and aircrafts.