Water bottles line the entrance to Foothill Intermediate School in Loma Rica, Calif., in 2016. Lead in the school’s drinking water frequently rises to unhealthy levels, forcing district officials to haul in bottled water until they find the source of the contamination and eliminate it. Unsafe drinking water is an ongoing problem in much of California, with children and the elderly at greatest risk. (AP Photo/Rich Pedroncelli)
Water bottles line the entrance to Foothill Intermediate School in Loma Rica, Calif., in 2016. Lead in the school’s drinking water frequently rises to unhealthy levels, forcing district officials to haul in bottled water until they find the source of the contamination and eliminate it. Unsafe drinking water is an ongoing problem in much of California, with children and the elderly at greatest risk. (AP Photo/Rich Pedroncelli) Rich Pedroncelli AP
Water bottles line the entrance to Foothill Intermediate School in Loma Rica, Calif., in 2016. Lead in the school’s drinking water frequently rises to unhealthy levels, forcing district officials to haul in bottled water until they find the source of the contamination and eliminate it. Unsafe drinking water is an ongoing problem in much of California, with children and the elderly at greatest risk. (AP Photo/Rich Pedroncelli) Rich Pedroncelli AP