What is the level of lead in public drinking water supplies?
In July of 1991, the U.S. Environmental Protection Agency (EPA) established an action level for lead in public drinking water at 15 micrograms per liter, which is the same as 15 parts per billion (ppb). Water suppliers must routinely test household tap water to check lead levels. If lead levels in the water are above the EPA action level and can not be quickly corrected, the water supplier is required to notify homeowners and take steps to reduce lead levels in the drinking water.
