Think of the knob or handle in your shower to control the water. You turn it clockwise to turn off the shower, now imagine if you just kept turning... to be honest I don't know if the knob really is the problem, I just know that whatever he is doing, somehow the shower starts leaking water even when you turn the knob to the off position. I know this because I have used this shower for over a year and it started leaking when he moved in. I called landlord to fix it during the break while he was away, and it starts leaking again right after he uses it.
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