Elk River

An Associated Press analysis of federal environmental data shows chemicals and waste from the coal industry have tainted hundreds of waterways and groundwater supplies for decades, spoiling private wells, shutting down fishing and rendering streams virtually lifeless.

Cincinnati water officials say samples show chemical levels in the Ohio River are well below what is considered hazardous.

Cincinnati plans to shut down intake valves along the Ohio River to protect the city's drinking water from a chemical spill in West Virginia.