Depending on where the plumbing issue arises, fixing it may be the responsibility of the unit owner or the property manager. The plumbing pipes inside and around individual units are the responsibility of the resident or unit owner; the pipes positioned around public areas are the responsibility of the property owner or manager.
Then you may need to shut off the main water supply for several or a dozen units to fix a problem in your unit. This requires you to get permission from the property manager and issue a notice to the units that will be affected. Any additional maintenance work that requires water to be turned off in multiple units may inconvenience the residents, causing delays in approval from the property manager.
It’s best to try and avoid plumbing problems whenever possible. What can you do?