contaminated
adj. US //kənˈtæməˌneɪtɪd// UK //kəntˈæmɪnˌeɪtɪd// con·tam·i·nat·ed
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1 impure or toxic (adj.) B2 Upper Intermediate Sciencedirty or dangerous because of chemicals, bacteria, or other harmful things.
rendered impure, harmful, or unusable by the introduction of undesirable or toxic elements.
ExampleThe local council warned residents not to drink the contaminated water.
ExampleThe investigation revealed that the groundwater had been contaminated by industrial runoff from the nearby chemical processing plant.
UsageOften used with the preposition 'with' to identify the source of pollution.