The diagram illustrates a simple water-filter assembly system designed to convert dirty water into clean drinking water.
The process begins with pouring dirty water into a plastic barrel equipped with a plastic lid. Inside the barrel, the water passes through multiple layers: sand at the top, followed by charcoal, and gravel at the bottom, which filter out impurities. The filtered water then flows through a pipe connected to a storage drum. From the storage drum, the clean water is dispensed for drinking.
The key feature of this system is the sequential filtration through sand, charcoal, and gravel, which collectively remove contaminants. The storage drum serves as a reservoir, ensuring a steady supply of clean water. Compared to unfiltered water, the output is significantly purer due to the multi-layered filtration process.