Four sessions were run over the course of a month and attended by 21 residents. They were part of the subregional Smart Water campaign which aims to make a long-term change to how we use water.
Mayor Mylchreest said it was fantastic to see young people taking an interest in key issues facing the district.
"With climate change an ever-growing issue, it is vital that we care for our most precious resource and that starts with teaching our young people how to protect and conserve water."
Te Awamutu Primary School principal Sharon Griffiths said the school was grateful to Vienna who, although home schooled, is a member of the school's environment group.
"Vienna and her mother Wendy have always been huge advocates for the environment and our school.
"We are very appreciative of her kind heart and that she took the opportunity to nominate Te Awamutu Primary School for the rainwater tank. It will be put to good use so we are grateful to everyone involved."
The cost of the tank has been jointly funded by council and Designer Tanks.