Ключевые слова: bad ecology, bubbles, contaminant, contamination, defilement, dirt, dirty scum, dirty water, dirtying, discharge sewage, ecology, environmental issue, eutrophication, foam, foaming, froth, gentle, gentle foam, head, hpv, impurity, lather, light, organic matter, organics, pollutant, polluter, scum, sewage, soap, soft, soft water, soiling, spring creek, spume, suds, water pollution, weightless,