Question

Which agency sets standards for gas purity?

a) ISO (International Organization for Standardization)
b) ASTM International (American Society for Testing and Materials)
c) EPA (Environmental Protection Agency)
d) NIST (National Institute of Standards and Technology)

Answer 1

The agency that sets water quality standards is the Environmental Protection Agency (EPA), which defines goals for water bodies and establishes criteria and requirements for pollution protection.

Step-by-step explanation:

The agency responsible for setting standards for gas purity is not specified in the options provided. However, the United States government agency that is responsible for water quality standards is the Environmental Protection Agency (EPA). The EPA has the mission of protecting human health and the environment, hence they create water quality standards that define the goals for a body of water and specify its uses, as well as establish criteria to protect those water uses and requirements to protect water from pollutants.