Water pollution occurs when harmful substances contaminate water bodies, such as rivers, lakes, and oceans. This can happen due to industrial waste, agricultural runoff, and sewage discharge, which introduce toxins and pathogens into the water. As a result, the quality of water deteriorates, making it unsafe for drinking, swimming, and supporting aquatic life. The effects of water pollution can be severe, impacting ecosystems and human health. For instance, polluted water can lead to the death of fish and other aquatic organisms, disrupting the balance of ecosystems. Additionally, consuming contaminated water can cause illnesses in humans, highlighting the importance of clean water for both public health and the environment.