How high (in meters) would the water rise in the pipes of a building if the water pressure gauge shows the pressure to be 252 kPa at ground level?

Answer 1

I assume that is gauge pressure, not absolute.

weight of a column of water h high with diameter of 1m^2:
weight=h*1*1E3kg/m^3*9.8N/kg

pressure from that (weight /area)
pressure=h*1E3*9.8 N/m^2=9.8h kPa

252kPa=9.8 kPa * h

h=252/9.8 meters

Answer 2

At whatever level the water rises to, only atmospheric pressure shall be actung on the meniscus. Hence, the height it reaches will be h=100/9.8