How many times the infiltration of water in nature is greater compared to it in the cities?

THIS DEPEND OF SOIL TYPE IN NATURE AND CITIES

Four times ,, as it develops land degradation , wasting of resources , limited development in both rural and urban settlements , lack of  power-plant development ( overall shortage of development) 

there is no exact answer for that. it depends on many as:

-Morphology of the ground. (gradient)

-Soil permeability (in cities also there are Green Areas) according to soil layers.

Gone to a region - infiltration for the city to that of the surrounding area depends primarily on the extent of urbanization. Today, because of increasingly frequent - global climate and extreme weather anomalies, outdated sewage systems or their absence and cleaning stations -  lead to disturbance of the water cycle, the water resources dangerously are exhausted and permanently reduces their quality.