42 U.S.C. § 9618 : The Public Health And Welfare — Comprehensive Environmental Response, Compensation, And Liability — Hazardous Substances Releases, Liability, Compensation — High Priority For Drinking Water Supplies

For purposes of taking action under section 9604 or 9606 of this title and listing facilities on the National Priorities List, the President shall give a high priority to facilities where the release of hazardous substances or pollutants or contaminants has resulted in the closing of drinking water wells or has contaminated a principal drinking water supply.