Physica
posted by
LO
.
what is the pressure dut to 30 m heght water column

Physica 
Ajayb
Pressure at the bottom of a water column of height h = d*g*h
where, d=density of water(1000Kg/m^3)
g=9.8 m/s^2 & h=30 m
Calculate P yourself.

Physics 
drwls
Atmospheric pressure should be added to Ajayb's answer.