nc division of water quality
  
  
    
      
  
  
  
      
  
  
  
    
  
    
        
    
          
              
            
            
            
        May 23, 2013 -
        
  
        Under legal pressure from environmental advocates, North Carolina regulators are seeking court orders to force Duke Energy to clean up groundwater contamination from unlined coal ash storage ponds at power plants near Asheville and Charlotte, where the pollution threatens the region's drinking-water supply.