If sediment is from natural sources, why is it considered a water pollutant?

Question

Quizplus · Accepted Answer

Sediment is considered a water pollutant because it disrupts the balance of the ecosystem. When sediment is present in water bodies, it can reduce the amount of sunlight that penetrates the water, which can cause a decrease in the growth of aquatic plants, reduce dissolved oxygen levels, and affect fish and other organisms that rely on clean water for survival. Sediment can also clog fish gills and make it difficult for fish to breathe. While sediment is a natural resource, excess amounts in water bodies can have negative impacts on the environment, making it a pollutant.

If Sediment Is from Natural Sources, Why Is It Considered