The diagram below shows how the English city Bristol deals with water pollution.
Summarise the information by selecting and reporting the main feature, and make comparisons where relevant.
A glance at the provided diagram reveals the main methods which are used by Bristol to cope with problems concerning water pollution. It is evident that some of the dirty water joins oceans and rivers without being cleaned.
Probing further, dirty water, which is constituted due to human usage, goes in three directions. It is vital to emphasize that those two directions are blended with ocean and river water since merely one direction is sent to sewage treatment plants, where they are fertilized. Resulting clean water is combined with rivers and streams.
In the procedure of creation of clean water for human usage again, river/stream water is diverted either to reservoirs and then to water treatment plants or directly to the latter destination. Water is cleaned and fresh water is formed in the last step.
Overall , Bristol does not seem to have a great contribution towards the protection of the environment since the majority of dirty water is polluting oceans and rivers.