As with everything in your life the original plumbers fittings within your house will need to be fixed and maybe replaced at some period or another. At these times you have got essentially two choices.
The first option is to get in touch with a local plumber to do the repairs for you. This really is definitely the safer although more expensive option. The local plumber will have the plumbers fittings required to carry out the actual maintenance correctly the first time round and the qualifications and experience to do it properly. The down-side of this choice is you will probably have to pay two call out fees, one for the plumber to come and then examine the actual damage and decide exactly what materials they'll need to bring along in order to be in a position to repair the problem and a second call out charge for the plumber to actually repair the problem.
Your other choice is to try and fix the problem yourself. This is instead risky unless you really are a plumber yourself because you will probably be delving in to an area in which you don't have any expertise. It's very easy to mess up and create a bigger problem than you originally had. Additionally, you will need to go looking for hte problem to see what kind of plumbers fittings you will need to have the capacity to repair the problem, where a plumber would know what things were required to do the repairs. The plumbers fittings and resources you will need will vary according to the kind of problem you've got and you might not know what the issue happens to be and wind up fixing the wrong "problem" and just wind up making matters even worse.
A leaking pipe is nothing to chuckle at. If it's left alone for long enough it'll cause your water and also electricity bill to skyrocket. If it's not attended to it may cause your home to become unstable as it leaks water into the walls and foundations. If it is a small and apparent problem you might be able to repair it yourself. If you're not sure what the problem is it is definitely best to get in touch with a local plumber.