maximum contaminant level (MCL)<span class="dashicons " data-icon="" style="color:#000;display:inline;vertical-align:baseline;"></span>

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The maximum contaminant level or MCL is the greatest amount of a contaminant that can be present in drinking water without causing a risk to human health.

It is the designation given by the U.S. Environmental Protection Agency (EPA) to water-quality standards promulgated under the Safe Drinking Water Act.

REVISED NOTICE: Economic feasibility analysis in consideration of a hexavalent chromium MCL
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