ONCE UPON A TIME… A DROP OF RAIN
After many travels and adventures eventually it gets dirty in the sewers that flow into a river. But Indy isn´t drop to fumble, unlike Bernard, another character in the story.
She explains, first in the laboratory, as they clean the dirty waters of the sewage before throwing himself into the tank of a ETAR where clean exit to return to the river.
Illustrated story with animation and narration for public junior, from 6 to 9 years of age, allowing younger understand the process of sewage treatment in a ETAR and the necessity of all housing and manufacturing stations are connected to the sewer. The environment thanks!