Human pathogens Hydrocarbons

The impact of the various substances listed above may result in low-quality water with bad taste, odor, and turbidity or toxicity from the high concentration of heavy metals, chlorinated hydrocarbons, and/or pathogenic bacteria and viruses. Water purity, however, is not a prerequisite to good water quality with respect to human consumption or agricultural and industrial uses. When water contacts soil, the latter contributes dissolved minerals (e.g., Ca, Mg, K) which may increase the potential water quality for biological uses because these minerals serve as nutrients. 

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