It comes out of the tap. Dutch “drinkwater” AKA “kraanwater” (drinking water AKA tap water) has by law a ph value higher than 7, and in most places it is somewhere between 7.8 and 8.3. read more
3) If your water contains metals these will be concentrated in the alkaline water produced at higher levels than in your untreated water. Concentrations may be two to three times higher than the levels in your untreated tap water. This can be extremely dangerous as these can interfere with the function of glands such as your thyroid. read more