What are the environmental impacts of wool?

Although, wool is sustainable and renewable, and it has a low impact as a fiber resource. Sheep can survive on grasses and pasture produced on uneven land that are not useful for other forms of agricultural production and thus do not require many inputs. Wool is not a highly processed material. Wool contributes about 5% of the global recycled fiber market.
However, there are certain loopholes in wool production as well such as ill-treatment of animals and environment degradation in-terms of soil erosion and degradation. Also, the waste excreted by sheep can pollute water bodies.