A Water Filtration Model Using Sand & Charcoal is a simple yet effective system that purifies water by passing it through multiple filtration layers. The sand layer removes suspended particles and impurities, while the charcoal layer absorbs chemicals, odors, and harmful contaminants. This model demonstrates the basic principle of natural water purification and is widely used in educational projects and rural applications.

Parts Used:

1. Plastic or Glass Container – Outer body to hold the filter layers
2. Fine Sand Layer – Removes dirt, silt, and suspended particles
3. Charcoal Layer – Absorbs chemicals, odors, and bacteria
4. Gravel Layer – Prevents clogging and supports filtration
5. Cotton or Cloth Layer – Initial filtration to trap large particles
6. Outlet Pipe – Allows clean water to pass out
7. Stand or Frame – Holds the filtration unit in position