Water gives life to all living things, but it also happens that this water is the murder weapon. On our planet, there are many deadly reservoirs, from which is to stay away. In this review we will focus on some of them. *River Rio Tinto : a trip to Mars* ![](https://ipfs.pics/ipfs/QmQWPEcanAYHR5QPipK9hPJm1HA4uHrJDpwA4BWz49BMzU) Around 3000 BC in the areas around the river Rio Tinto (Rio Tinto, Red River ) in the south of Spain have begun to develop rich deposits of gold, silver, copper and other valuable minerals. Since the water is contaminated with heavy metals, chemicals, mining and acids . *Lake Karachay ( Chelyabinsk region, Russia )* ![](https://ipfs.pics/ipfs/QmUNqeZxECYmqSonPpxA9tLoyQGAtKwvheUqFH1hXx7gyP) Karachay - the most dangerous radioactive lake in the world. Not far from the chemical plant "Mayak" is located in the Urals, Lake Karachai, known for its radioactive water. This facility is made of nuclear fuel, nuclear weapons components , dispose of the waste. Since the 1950s , the lake dropped thousands of tons of radioactive waste. Anyone who is on the lake more than an hour, risking to receive a lethal dose of radiation. This made Karachay one of the deadliest places on the planet. *Boiling Lake (Dominica)* ![](https://ipfs.pics/ipfs/QmdJ5kAwiaC2PjTw6a4RwNUJoWEBFWmUQDu6qHn1ToLvgM) The hottest in the world is the Boiling Lake on the island of Dominica. It is located in the valley of despair. The water in it reaches a temperature of 92 degrees Celsius. In the rainy season, the temperature can drop to 10 degrees, but even then bathing is strictly prohibited. Underwater continue to hit the hot springs, and even the lava can flow. It's as normal as the fact that at times the water level drops sharply, and then increases rapidly. All this madness is the result of volcanic activity. *Tsitarum River (West Java, Indonesia)* ![](https://ipfs.pics/ipfs/QmPp5PVMXBcSopbjZPM9ourr3upFjrZ3YMaaW9ZTYr7QcV) The families of local residents who once lived in fishing, switched to the collection of recyclables river, such as plastic bottles, rubber gloves, and even a broken chair legs. But the future does not look quite so bleak. In 2011, he started to operate a $ 4 -billion 15 - year project to save the river and dependent people. *Blue Lagoon (Derbyshire)* ![](https://ipfs.pics/ipfs/Qmb4CytZ7tbRrhodC48UvpF7P6WE7JmSebKC5akx2hj1rP) Blue Lagoon in England - in fact, a former quarry, which was flooded after closing. And it's the last place would like to relax and swim with your family. Water colored with turquoise calcite, which is washed out of the limestone rock. A calcium oxide increases the alkalinity of the water to dangerous levels. *Horseshoe Lake (California, USA)* ![](https://ipfs.pics/ipfs/QmYYhfjT3AP1EPzwzsPmrz3UihVJ4VFud2dNkLvrRyU3H5) California - a house of the sun, surf and poisonous lakes, such as Lake Horseshoe (Horseshoe Lake, Horseshoe Lake) located in the area of Mammoth Lakes. Horseshoe allocates a high concentration of carbon dioxide and hydrogen sulfide. Harmful gases are formed as a result of underground volcanoes throughout the area. *Mono Lake (California, USA)* ![](https://ipfs.pics/ipfs/QmZ93imGcQWy1rkAqcgMUEzcP1ornxY8TXJJPVPq7jRD8o) Mono Lake is also located in California, it is one of the oldest lakes in the United States, and one of the deadliest. In the absence of flowing rivers due to evaporation of the water level is reduced and a large amount of salt is deposited in the lake. This makes it three times the salinity of the oceans and gives it a pH balance 10. While salt led to the emergence of amazing limestone tufa columns, it also made lake is much more dangerous. The microscopic shrimp, flies and some species of algae - the only inhabitants of the pond. Any bird can not survive for long if they decide to drink. Of course, water is not always toxic since the toxicity is changed depending on the depth and the time of year.