What causes white particles in the water?
It is most likely sediment from your water heater – chemicals added to tap water tend to clump and fall to the bottom of a water heater when it is not being used. It may also be from the dip tube inside the heater. The best solution in this case is to replace your water heater and clean out your pipes. If you live in an area with hard water, it may be caused by calcium deposits as well.
