Health officials review rules on contaminants in water supply

Regulators have long imposed limits on harmful contaminants such as lead and mercury, but now they're taking a closer look at what they call "contaminants of emerging concern," such as those found in pharmaceuticals, bug spray and fragrances.
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Regulators have long imposed limits on harmful contaminants such as lead and mercury, but now they're taking a closer look at what they call "contaminants of emerging concern," such as those found in pharmaceuticals, bug spray and fragrances.

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