There are small white particles clogging the aerator on my faucet. What are they?
The white particles are possibly pieces of the dip tube from your hot water heater. Several manufacturers of hot water heaters used polypropylene dip tube between 1993 and 1996. These dip tubes have a tendency to fail and break up. If you run out of hot water quickly, this is a sign your dip tube has failed. Another test is to clean the aerator and then run only cold water. If the particles do not appear, run you hot water and see if the particles appear. If so, this is sure sign they are coming from your hot water heater. If your dip tube has failed, you need to either replace the dip tube or your hot water heater. It is a good idea to flush your hot water heater annually.