What are the white particles sometimes found in my faucet aerators?

There's a growing problem across America today, triggered by residential water heater dip tubes made from an inferior polymer plastic. These tubes are literally going to pieces in the tank, causing hot-water shortages and polluting household plumbing systems with white plastic particles. When the owners find these particles floating in their water or clogging their aerators, they often call their water agency to complain. Why? Because water users perceive this as something that is coming into their residence from the water being supplied from the Town, not something that is originating within their homes. The Schererville Water Department recommends that you contact a licensed plumber to discuss correction to this condition.