The environmental protection agency sets standards for water quality and inspects water supplies for bacteria and chemicals.
a. true
b. false

The answer is true. The environment protection agency is responsible for the national primary drinking water regulations, which are health-related standards that establish the maximum contaminant levels or as called as maximum contaminant levels for regulated substances in drinking water. A maximum contaminant levels is the highest allowable level of a contaminant allowed in water transported to the consumer tap. A maximum contaminant levels are applying at public water systems in the safe drinking water act. The environment protection agency also has set maximum contaminant levels goals at levels which no known or expected opposing effects on the health of persons happen and which permit an adequate margin of safety. The enforceable maximum contaminant levels are set as close to the maximum contaminant levels goals as reasonable taking into concern the costs and treatment methods obtainable to public water systems.  

Mutations are changes in the dna