To be fair, there is probably not really sand floating in your hot water heater. However, people are amazed when they drain their hot water heater and get a look at the sediment that comes out. It really does resemble sand but is actually calcium carbonate and magnesium. The only true sand in your hot water heater probably originates from a well if that is your water source. With that explained, here's what you need to know about the sediment in your hot water heater, and what you can do about it.
10 May 2017