Environmental experts tested the water. The culprit? Fluorescein.It's a chemical used during underwater construction to find leaks.
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It's also very dangerous to swim in the canals because of motorboats and gondolas circulating the canals constantly and at a rapid pace. Not even on the so-called fondamenta (the seashores) are you allowed to swim. It is even more dangerous, since bigger boats regularly stop by.
However, Venice is one of the World's most popular tourism hotspots and a lot of money is invested in its tourism industry. This means that the canals and waterways are cleaned on a regular basis, picking up litter and other waste that has found its way into the water.
You can drink the water in Venice and save yourself the expense and waste of bottled water. Venice's tap water is pumped in from the Italian mainland so you don't have to worry about anything questionable in the water that is floating under the city. That lagoon water is not coming out of the tap.
When we say "driving in Venice", what we really mean is "driving around Venice" because there are no cars allowed in the city at all. With an intricate network of canals, there's no room for passenger cars, so park your car and do all of your sightseeing in downtown Venice on foot.
It is difficult to predict an exact timeline for when Venice will be underwater, as the process of subsidence and sea level rise is gradual and affected by various factors. However, experts have suggested that if current trends continue, the city could be at risk of disappearing beneath the waves by as early as 2100.