"close to leak" is correct and can be used in written English.
You can use it to describe how close something is to the point of leaking. For example, "Be careful when handling the bottle as it is close to leak."
Even water pumped from outside the city risked contamination with sewage when it reached the squalid streets, and the wells still in use lay dangerously close to leaking cesspools.
While individual sites can have varying slow leak rates without undermining effectiveness, the system as a whole must be close to leak-free.
Comey revealed that after Trump tweeted about the possible existence of tapes, he asked a "close friend" to leak contents of one of his memos to a reporter in the wake of his firing.
Perhaps to quell some of the speculation about Haley's political ambitions, people close to her leaked the suggestion that she's looking to make money in the private sector.
The diagnosis of urinoma is confirmed by enhancement on excretory-phase scanning, with inhomogeneous opacification (denser close to the leaking source) which progresses on repeated delayed scanning.
In September of last year, McChrystal (or someone close to him) leaked to Woodward a document that essentially forced President Obama's hand.
The house included a basement pool (which eventually closed due to leaking), a stone fireplace 10 feet in width, and small square windows.
It is very important the edges be closed to not leak filing into your frying oil and create a big mess.
"If they took about 20 or 30 seconds of video with a very specific purpose of measuring flow rates, which means having the ROV [remotely operated vehicle] stay completely still or parked on the bottom, and you got video of the plume close to the leak, and if it was illuminated and with high resolution, then you could get pretty good estimates of the flow rates," Crone said.
