The Flint Water Crisis put the spotlight on lead in drinking water throughout the United States, and numerous media reports have found elevated lead levels in water sources in many other cities.
Since then, many states have begun scrutinizing drinking water in schools and public buildings.
The Arizona Department of Environmental Quality, for example is the process of coordinating with multiple local agencies, public water systems, and public schools to proactively conduct a statewide screening program for the presence of lead in the drinking water of schools. ADEQ is funding this six-month fast-track screening program in an effort to collect and test 14,000 drinking water samples from 7,000 school buildings across Arizona.
Water Quality Products recently published a list of what some states are doing to test for lead.
More details here.