Ключевые слова: britain, canal, chemical, clear, contaminate, contamination, culvert, dirty, discharge, drain, drainage, dump, ecology, environment, environmental, factory, flood, flow, flowing, image, industrial, industry, infrastructure, liquid, minimal, outflow, pipe, poison, political, pollute, pollution, pouring, rain, river, runoff, sanitary, sewage, sewer, sewerage, shore, storm, stream, system, toxic, treatment, tube, tunnel, uk, waste, water,