Team anonymous is from Effiduase Presby Basic School B in the Eastern Region. According to the team, corn cobs with the help of absorption removes toxic substances from polluted water. 

The team will be using corn cobs as a filtration material with a water level indicator to build a filtration system.

The water level indicator indicates the level of the water in the water collector and uses electrolysis to kill germs, pathogens and viruses that can be found in polluted water. This system filters or reduces the toxic substances that can be found in water.