Answer:
Water pollution is the contamination of water sources by substances which make the water unusable for drinking, cooking, cleaning, swimming, and other activities. Pollutants include chemicals, trash, bacteria, and parasites. All forms of pollution eventually make their way to water.
Pollutants of concern often associated with aquaculture include: total suspended solids, settleable solids. biological wastes (metabolic waste, unconsumed feed) floating and submerged matter.
Water pollution from fish farms takes a variety of forms, from feed-derived wastes to therapeutics, pesticides and other chemicals to pathogens/parasites and escaped fish.