Which microrganisms in water cause diseases?
Sometimes microrganisms that cause health effects can be found in drinking water. However, as drinking water is thoroughly disinfected today, disease caused by microrganisms is rarely caused by drinking water. People that swim in swimming pools will find that the water they swim in is disinfected with either chlorine, ozone, UV or chlorine dioxide. But there are people that swim outside in surface water every year. These are the people that are most susceptible to bacterial infections and infections caused by other microrganisms, because microrganisms often enter surface water through industrial discharge and animal excrements. When you are an outside swimmer, you always have to be careful and read the signs placed by the waterside, because the water you are swimming in may be infected, for example with botulism. There are various bacteria and protozoa that can cause disease when they are present in surface water. Bacteria are not only known to cause disease when they enter a human bod
