"Water Police"

I have forgotten to write about the "Water Police". We can get drinking water via two methods. The one is that we pay for five gallon water jugs and give back the empties. A truck will come around and pick up the empties and leave full jugs. The other method is a large water truck will come by and just take the jugs we have and fill them from the truck and recap the bottles on site. All they do is simply run a hose from the truck down to the bottles and fill them right on the side of the street outside the office. We call the latter truck, the "Water Police" because it has a siren that sounds like a police siren. When I come back home I will probably hear a police car and think that the water truck is coming. They run the siren in the same fashion as an icecream truck does. You have to let the people in the neighborhood know that you are coming down their street!