What is the chlorine content of the water that runs from the tap?
To preserve bacteriological safety of water, on average 0.1 to 0.2 milligrams of chlorine per litre of water is added at various points of the distribution network. This ensures that the water that reaches you is totally compliant with sanitary regulations. Chlorine content in water treated this way represents 1 drop of chlorine per 1,000 litres of water, which is roughly equal to 5 bathtubs.