Environmental
Colorado's 'Arsenic Rule' for public water systems requires:
AA. All public water systems to maintain arsenic levels below 10 ppb (parts per billion)✓ Correct
BB. Only rural water systems to test for arsenic
CC. Arsenic testing only in properties built before 1980
DD. Arsenic is not a regulated contaminant in Colorado
Explanation
Colorado follows the federal EPA's Maximum Contaminant Level (MCL) for arsenic in public water systems of 10 parts per billion. Colorado has areas with naturally occurring arsenic in groundwater.
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Key Terms to Know
Zoning
Local government regulations that control land use by dividing areas into zones specifying permitted uses, building sizes, and densities.
Eminent DomainThe power of government to take private property for public use, with the requirement to pay the owner just compensation.
VarianceOfficial permission to use land in a way that does not conform to the applicable zoning ordinance, granted by a zoning board when strict enforcement would cause undue hardship.
Adverse PossessionA doctrine by which a person can gain legal title to another's land by openly, continuously, and adversely occupying it for a statutory period.
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