PURIFYING WATER

Duration: 15 min

Year Published: 1928

Creator: Encyclopaedia Britannica Films Inc

Format: 16mm

Description: "Lake water, the 'crib,' animation of operation of 'crib,' the pumping station. Removing sediment, settling tanks and animation showing operation, action of aluminum sulphate, sand and gravel filters, animation showing action, a filtration plant, cleaning sand, how water is contaminated, a safe well. Disinfecting water, chlorination plant, animation showing action of chlorine. Testing water, bacteriological laboratory, how tests are made." Ohio

Complete Record: Dewey number: 628.1 Audience level: jh-sh-c Guide Format/cost: 16-sl-$24 Distributors / rental: Not shown in source

Metadata Source:Educational Film Guide 1946