As such their drinking water is not monitored and often contains bacteria E. coli. That problem can be seen even in rural parts of Slovenia such as Triglav National Park. In spring and summer time people have to boil their water, so that they do not get infected with the E. coli when they drink tap water.
E. coli is a type of coliform bacteria, found in soil, plants and water. If E. coli is transmitted to humans it can cause diarrhea, vomiting, cramps, nausea, fatigue and sometimes even death.