New research suggests that saltier, more alkaline freshwater can release toxic metals and harmful nitrogen-containing compounds from streambeds and soils in drainage basins. The results further suggest that many of these chemicals travel together throughout watersheds, forming 'chemical cocktails' that can have more devastating effects on drinking water supplies and ecosystems when compared with individual contaminants alone.
from Latest Science News -- ScienceDaily https://ift.tt/2Q88RCT
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