How to identify unknown plumbing under sink?

[backslash9]

Anyone able to enlighten me as to what this pipework coming through the back of cabinet would be. 

Under laundry sink in apartment complex.

Cheers

 

[JacobZ]

Hi @backslash9,

Welcome to the Bunnings Workshop community, it is fantastic to have you with us.

Have you got air conditioning in your apartment? Do you hear dripping when it is on?

It's difficult to say with 100% certainty, but it is pretty likely that it is a drain line for your air conditioner.

Let me know what you think.

Jacob