下次老媽子談煲水論時，記得提一提以上小貼士。 Let’s Drink Well!
Is It True Boiled Water Safer To Drink?
We are often advised to boil the water we drink.
The drinking water supplied in Hong Kong complies with the World Health Organization’s Guidelines for Drinking-water Quality 1. Some household or buildings contain higher level of heavy metals because the materials of the water pipes may have leaked to the water because unlined galvanised piles were widely used in Hong Kong in the past. These pipelines started to corrode as years went by and caused discolouration of water if they have been stagnant inside the pipe for a certain period of time.
Back in 2015, drinking water in a couple of public housing estates were found to contain high levels of heavy metal. Excessive levels of lead were detected and raised a lot of health concerns. Most people had the misconception that boiling water before consumption will address the water quality concern, thinking that high temperature can eradicate the bacteria. However, boiling cannot remove harmful particles or heavy metal.
If you are worried about organic matters in drinking water and want to continue to boil your drinking water. It is suggested that one should let the water boil and let the boiled water sit for 1 to minutes so that the chloride and harmful residues can evaporate. Chloride, the substance which suppressed the growth of bacteria is removed during boiling, which means that there is a chance of bacteria growth if the container used for storing the water is not sterilized 2.
Don’t hesitate to tell your families and friends for the above tips! Let’s Drink Well!