What role do PCBs play in aquatic pollution?

PCBs, or polychlorinated biphenyls, are synthetic chemical compounds historically used in various industrial applications, such as electrical equipment and hydraulic systems. Their role in aquatic pollution is primarily due to their toxicity and persistence in the environment. When released into water bodies, either through industrial discharge or improper disposal, PCBs accumulate in sediments and can bioaccumulate in aquatic organisms. This not only compromises the health of these organisms but can also pose significant risks to the entire aquatic ecosystem, including impacts on local wildlife and humans who rely on these water sources for fishing and recreation. The ability of PCBs to disrupt endocrine systems and cause cancer further underscores their classification as toxic pollutants resulting from industrial activities, highlighting the severe environmental challenges they pose.