Printed from: https://conservationhandbooks.com/waterways-wetlands/ditches-and-pipes/pipes/
Pipes are either porous or non-porous. porous pipes are used wherever water needs to be absorbed from the ground, or allowed to soak away into it. Land drainage systems, in agricultural land and elsewhere, are constructed of porous pipes which collect the water from the ground and drain it away. porous pipes are also used...