Filtering water

Design and build your own water filtration system

Water is crucial to human life, but it can also be a killer.

Drinking or cooking water contaminated with micro-organisms or chemicals is a leading cause of disease and death across the world. Poor facilities for the disposal of sewage and other waste water can quickly lead to the spread of dangerous diseases.

Activity info, teachers’ notes and curriculum links

This activity gets students to investigate different possible ways of filtering dirty water to improve its cleanliness by designing and building their own water filtration systems. The lesson can be extended with a practical session in which students work in small teams to investigate the salinity of different water samples – see the related extension activity ‘Water Treatment Systems’ within the related activities section below.

The engineering context
Drinking or cooking water contaminated with micro-organisms or chemicals is a leading cause of disease and death across the world. Poor facilities for the disposal of sewage and other waste water can quickly lead to the spread of dangerous diseases.

Engineers and scientists work to provide us with safe, clean drinking water, with efficient and clean methods for disposing of our waste water and practical drainage solutions.

Suggested learning outcomes
Students will be able to recall the different types of impurities that can contaminate water. As well as this, they’ll know how to describe how water filtration equipment acts in several different ways to produce potable (drinkable) water.

The activity sheet includes teacher notes, guidance, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved UK nations; England, Northern Ireland, Scotland and Wales.

Download the activity sheets for free!

All activity sheets and supporting resources (including film clips!) are free to download, and all the documents are fully editable, so you can tailor them to your students’ and your schools’ needs.

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