Example 2:
The fire brigade and drinking water

Feuerwehr

Did you know that we get our drinking water from the same pipes as the fire brigade gets water to extinguish fires? As fewer people will be living in our town in the future, we will need less drinking water. This would mean that the water would stay in the pipes longer so bacteria could collect, which could make people ill.

 

Questions we need to ask concerning drinking water:
  1. Should we install smaller pipes, i.e. “converting” when the number of inhabitants falls? But this would be problematic for the fire brigade people, who need to use a lot of water when they´re on fire-fighting duty so they´ll continue to need the larger pipes and volume of water. In addition, this kind of “conversion” is very expensive!
  2. Or should we let water run out “artificially” to prevent bacteria forming in the pipes? This solution would be problematic too, because drinking water is so expensive and would be wasted in this way!