Thu, 01 Jan 1970 01:00:00 +0100Sat, 25 Jul 2026 03:10:03 +0200https://english.radio.cz/number-lakes-declared-unsafe-swimming-due-cyanobacteria-8617503© 2026 Radio Prague International The current hot and dry weather is causing many problems - from increased fire hazard to crops withering in the fields. Those who can use the opportunity to cool down in the country's numerous lakes. But the quality of the water there can also be gravely affected by the heat-wave, which increases the growth of micro-organisms known as cyanobacteria. They produce poisons which can be dangerous for people and therefore a number of lakes have been closed to visitors. encr@radio.cz (Cesky Rozhlas)webmaster@radio.cz (CRo Webmaster) https://english.radio.cz/sites/default/files/images/koupani4.jpg?timestamp=1591436008 https://english.radio.cz/number-lakes-declared-unsafe-swimming-due-cyanobacteria-8617503 Radio Prague International Radio Prague International radio.prague.int@gmail.com clean 0 1 2 3 4 5 6 7 8 9