Set atop a hill on the Italian island of Sicily, Agrigento is a heritage tourist's paradise. Beneath the archaeological structures and relics of its Valley of the Temples lies an ancient maze-like aqueduct system that still captures water today. But the aqueduct, and others built in modern times, are running so dry that small hotels and guesthouses in the city and nearby coast are being forced to turn tourists away.

They don't have enough water to guarantee their guests a toilet that flushes or a shower after a day out in the summer heat. READ MORE: Keen to visit Machu Picchu? Here are all your options Sicily began enforcing water restrictions in February when the region declared a state of emergency amid a relentless drought. Leaky, ageing infrastructure has only worsened the shortages, which have hit tourism and agriculture alike, two sectors crucial to Sicily's economy.

Rationing is in place for more than 1 million people across 93 communities. Some are having to reduce water consumption by up to 45 per cent. That means taps run dry according to schedule, and supply is shut off completely overnight in most places.

Having enough water to drink is a matter of getting organised during the day. On TripAdvisor and other travel forums, tourists are asking whether it's worth visiting Sicily's impacted areas. Hotels are warning clients about potential shortages, and are helping visitors rebook elsewhere on the island where restrictions are less severe or not in effect.

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