The federal drinking water regulations are here: https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations https://www.epa

The federal drinking water regulations are here: https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations https://www.epa.gov/ground-water-and-drinking-water/national... Anything not on that list is not blanket applicable to the U.S.