In many areas of the country this question wouldn’t even be asked because there is a shortage of water and strict controls in place for water usage.
Some cities even have water police that will ticket people for washing their cars or watering their lawns because the problem is that serious. In the East Tennessee area, we are fortunate that water is abundant—most of the time. But our area has suffered severe droughts within recent years, causing a significant loss of trees. Also, not far from us in the Atlanta area, the drinking water supply became critically low during these droughts. Therefore we should not take a plentiful water supply for granted.