I've been watching this water leak for a few months. I thought a leak and others thought just from a drip from the filters above. It finally had a little stream of water even if ever so slightly. The ground here swallows water very fast so very easy to miss a small leak. I vaguely remember the ridged black pipe we were using was just a little short and not flexible for a turn like this. It lasted a couple years but eventually decided to disconnect. May have been effected (was effected) by settling under the water spout.
A two day project and more digging than I want. Had to decide on the flexible hose to make that connection because the rigid black pipe is not flexible and basically brain dead. 20 pesos a meter for the clear stuff, very flexible and as strong as the black stuff. Actually both are easier to work with if they sit in the sun a few hours. The weak part are the hose clamps that corrode and become useless. A soldered copper pipe from one end to the other is a better solution.