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NATURAL WASTE WATER TREATMENT

29 minutes

Grades 9-Adult

Produced by Hans Ernst-Weitzel

To protect our groundwater and rivers from impurities, waste
water has to be cleaned properly. Our modern sewage treatment
plants are expensive, inefficient, and not very effective.

NATURAL WASTE WATER TREATMENT features small decentralized
sewage treatment

Awards: 2nd Place, German Ministry of Economics Film Festival

• "Students can see sound biological practices in action as
  well as a family practicing their strong environmental ethic -
  essential for a home disposal system to operate successfully."
  Science Books & Films
  
  WASTEWATER, TOILET, BIOLOGY, ENVIRONEMNT, SCIENCE
  

ISBN: 1-56029-574-0

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Bullfrog Films
Box 149, Oley PA 19547
(610) 779-8226
E-Mail: bullfrog@igc.apc.org