Drinking water is one of the best controlled food. But what happens after the water left the waterworks? Secondary sources of contamination very often take place within the house or within hot water cylinders. Virus, bacteria or heavy metals can migrate into our drinking water.
Beside drinking water commercial products like mineral water or soft drinks are common in every household. Although these products are intensively checked it has been shown by NGOs like Stiftung Warentest and Ökotest that there are significant differences in their water quality.
colifroms should not be detected in drinking water.