Deforestation:

Deforestation has a negative impact because if trees get chopped down there will be runoff taking lots of soil with it into rivers. If water takes up so much soil it will be harder for plants to grow. Also, as the muddy runoff flows into the rivers the sediment increases, wiping out many of the life in it. On the other hand, places with thick and many trees stop the water from hitting the ground forcefully allowing it to infiltrate it. This is good for the plants to grow, and, with excess water it can be used for transpiration for the water cycle.

With drier climates, there is less rainfall. As a result of less rainfall, there is reduced vegetation. Because of this there is reduced evaporation. This goes on and on like another cycle

Urbanization:

Urbanization has a negative impact because of lower transpiration and more surface runoff. There is lower transpiration because of the reduced plants in industrial and urbanized areas. Urban areas usually have more concrete which is why there is little infiltration and more surface runoff. Also there can be very dirty runoff running into rivers and oceans leading to pollution in the sea. There could also be a higher chance of flooding.

Agriculture:

Agriculture has a negative impact because of how much water consumption some foods need. E.g. Beef needs more than 16000 litres per kg. Also many things like pesticides, fertilizers, and animal waste add to rivers making it more polluted.

What is Greywater recycling?

Grey water is any wastewater that is produced unlike sewage. Greywater recycling is using greywater efficiently so water is not wasted. This means that we can use water that is clean enough like shower water that goes through the sewage, but before going to the sewage, it can be used for other purposes such as water needed to flush our toilets. However, recycling some water such as kitchen water can be unhealthy because of organic material. Overall, greywater recycling can be used to sustainably use water and reduce the amount of water being wasted.

How would I use Greywater recycling in designing a more sustainable world/city in your Project Utopia?

I would use greywater to keep a cycle in the bathrooms of peoples homes. For example, in a bathroom there are usually a shower, toilet and wash basin. Water from the shower and wash basin could be used in the toilet as we are not cleaning ourselves using the water coming from the shower. Then the water used in the toilet would have to be wasted. But, you are saving much more water then the water just ending up in the sewer.