aerial view of the water plant at gortahork in county donegal, republic of ireland

water plant purification treatment distribution lough lagha fresh waste gortahork falcarragh aerial donegal ireland atlantic wild way peat bog peatbog coast mountains muckish travel destination hills beach ardsbeg killuilt upper cutting fuel heating irish uisce eirin gaeltacht ballyness bay magheryoarty street track drinking quality tradition traditional flying above sky blue