The phrase 'water leak' is correct and usable in written English.
You could use it in a variety of sentences, for example: "I need to call a plumber to fix the water leak in my bathroom."
A water leak trickled loudly.
"There's been a water leak," Rachel said.
What happens if there is a water leak?
And she sent us basically a rant — water leak, flood".
A water leak into Kopra's helmet forced Nasa controllers to abort the spacewalk two hours early.
We thought it was the water leak but now we're not so sure".
DeCair, speculated about what might be wrong — possibly a water leak in a condenser.
Hotel employees entered Ms. Cachay's room to find the source of a water leak.
A few months ago my Midtown condominium apartment was damaged by a water leak caused by an outside vendor.
And although our German guests couldn't fix the hot water leak, they did manage to fix our broken coffee machine.
"For example," she said, "this morning a neighbor came to tell me there was a water leak in my flat.
