Ключевые слова: aquatic, aquatic life, contaminated water, contamination, contrast, dirty water, discharge, discharge pipe, discharge point, drainage, drainage pipe, ecological impact, ecosystem, effluent, environment, environmental issue, flow, hazardous, human impact, industry, liquid, outlet, pollutants, polluted, pollution, river, sewage, sewer, sewerage, toilet, underwater, urban runoff, waste, waste disposal, waste management,