Pesticides and PCBs

(An analyte grouping for similarly typed pollutants)<br>
A substance intended to prevent, destroy, repel, or mitigate any
pest. Pesticide levels in ground water are monitored to ensure
its suitability for use as drinking water.
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PCBs, or polychlorinated biphenyls, are a type of industrial
chemical once used in electronic and hydraulic products. They
are classified as a probable human carcinogen. PCBs are no
longer manufactured, but are still found in the environment
because they do not easily break down.