What is the problem with the water in Lake Como?

However, Como Lake's greatest water quality problem is excessive phosphorus, which has caused annual algal blooms and overgrowth that has further damaged the integrity of the lake.



In 2026, the primary "problem" with Lake Como's water—referring to the famous Italian lake—is its ongoing struggle with microplastics and pollution despite its pristine appearance. Environmental reports highlight that while the water looks sapphire blue, it has one of the highest concentrations of microplastics found in Alpine lakes, largely due to runoff and inadequate wastewater treatment in the surrounding mountainous villages. Furthermore, summer algae blooms can occasionally occur near the shorelines, triggered by rising water temperatures and nutrient runoff. If you are referring to the smaller Como Lake in St. Paul, Minnesota, the issue is severe eutrophication caused by excessive phosphorus, which led to a massive carp removal project in 2025 to help restore the ecological balance and water clarity.

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In fact, Lake Como always tends to be clement, despite being framed by snow-capped mountains, despite being so close to Switzerland. Palm trees and tropical plants thrive in its shielded climate, where the lake is so deep that it never freezes.

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In 1169, the Bishop Vidulf of Como put a curse on Isola Comacina, (Isola Comense or Cumana as it was known). ?No longer shall bells ring, no stone shall be put on stone, nobody shall be host, under pain of unnatural death.? Ever since, inhabitants of the island have been trying to exorcise the curse.

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It does not have to be expensive, but can be if you want it to be expensive. Typically I pay abot €11 for lunch in a bar and about €15 for dinner in a trattoria for dinner in the evening (both including wine). Restaurants will be more expensive.

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adders are found in the countryside, and water snakes are found in the water. But both are common, as any outdoorsy person knows.

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Italy, located in the “climate hotspot” of the Mediterranean, has also been badly affected. In northern Italy, which experienced its worst drought for more than 70 years last summer, the mountains have very low snow levels and lakes have shrunk, including Lake Como, which is less than 18% full.

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Located near Milan, the serene waters of the glacial Lake Como in Italy makes for the deepest freshwater lake in the country and has a distinctive shape resembling the stem of a catapult. The lake is surrounded by a number of resort villages that provide one with classy hotels and vistas.

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In brief we are now confident in claiming that Lake Como hosts at least one well-established wild wolf-pack. There may also be a previously unrecorded pack inhabiting the Valsolda to the north of Porlezza. In addition, there have been some occasional sightings of lone wolves elsewhere in the province.

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The water quality is GOOD on the beaches in the villages marked 1 to 31. The water quality on Lake Como is regularly checked by the local health authority Azienda Sanitaria Locale ; checked.

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Lake Como is generally quite safe at night. The area is well-policed and violent crime is relatively rare. That being said, it's always important to be cautious and aware of your surroundings, especially when traveling alone. Keep your belongings close and try to stick to well-lit, populated areas whenever possible.

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