Band 4+: The diagram below shows how a simple water filter is constructed and how it functions to produce clean drinking water. Summarise the information by selecting and reporting the main features, and make comparisons where relevant. » Write at least 150 words.

The picture depicts a minimal water filtering construction and its process which results in producing drinkable liquid.

Overall, there are 3 crucial components which unqualified water have to pass through including sand, charcoal and gravel.

To commence with, to create a purified water manufactor, 2 tanks are required. The first tank is filled gravel, charcoal and sand perspectively. A pipe ,which is connected to the bottom of the former tank, links with the second holder ,the storage for the fruit.

With the respect to the pure water manufactoring, dirty beverage is poured into the first tank, then all the germs in it are collected by 3 purifying ingredients. This is followed by clean water being transferred to the storage which provide consumers with drinkable water.