Testing:

This is a 2 minutes waterproofing test for our green wall with a high pressure water.

Result:

As you observed in the video, the wall stayed waterproof for the required time limit due to the soil being compact and firm. There was no water leakage spotted during the testing because of the well-fixed waterproof membrane and flashing around the window.   

Conclusion:

A satisfactory result exceeding expectations. Therefore, this system could be classified as giving above satisfactory performance on walls that are very water pervious.