Interpretation:
The concentration of TCE in the given sample of tap water is to be calculated and whether the water sample is safe or unsafe for human consumption is to be predicted.
Concept Introduction:
Water gets polluted due to the presence of various biological and chemical contaminants in it. Biological contaminants include microorganisms such as Giardia, Legionella while chemical contaminants are mercury, lead, benzene, trichloroethylene etc. Both these render water unfit for consumption by human beings and animals, if the contaminant exceeds a certain limit, termed as Maximum Contaminant Limit.
The concentration of a contaminant is reported as the mass of contaminant (in milligrams) present in one liter of water.
It is known
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