Please evaluate my ielts writing task 1. Thank you very much

Topic: The diagram below describes how stormwater is recycled in an Australian city.

My essay:

The diagram illustrates the process of recycling water from a storm in an Australian city.

Overall, it can be seen that the process contains five main phases, starting with collecting stormwater through drains, and ending with leading recycled water to customers.

The first stage is to catch the rain that falls on the ground, then the water is led to the water recycling plant via drains that are underground. In the next stages, water goes through a four-step process, which aims to remove unnecessary waste. The water is first removed from plastic and rubbish, then small particles, followed by the process of eliminating bacteria, viruses, and also molecules, and salt. After that, chlorine is added to the water with a concentration of 4 milligrams per liter. As all the recycling process is finished, water will be stored for later use. When the weather is hot and the water demand increases, this water is used to supply to consumers.