In the United States, the Safe Drinking Water Act of 1974 required the EPA to set standards for allowable quantities of chemicals in water. It also authorized local governments to monitor and maintain these standards. Local governments also have the authority to set more stringent standards than those required by federal law. Suppose you work for a municipal water department for a city with 200,000 people, and your job is to design a program that ensures people have safe drinking water with low lead levels. Build your monitoring program below. Note that "action level" refers to the threshold level of lead in the water above which a sample is considered high. For each of the categories, select the option that is most likely to keep the public safe.