There's going to be a wide array of potential plumbing issues for any structure. Sure, it's easy for us as a homeowner to perhaps fix a leaking faucet or toilet. But it's also going to be important to remember that ALL buildings are going to have plumbing mishaps. So if you own a building or manage a company in a commercial structure...it's important to be prepared for things that could cause damage to the building or things that could impact the business.
The difference here will probably be that you either A) will not want to attempt plumbing repairs yourself in a commercial building, or B) you probably don't have authority to do it anyways. Just like faulty repairs at your home, a DIY plumbing repair gone wrong at your office could be catastrophic.
While you can definitely have your same drain clogs and leaking toilets in a commercial building, but if you think about the structure, you can probably think of several aspects that will be different from plumbing in your actual home. Bathrooms are larger and contain multiple sinks and toilets, requiring extra pipes that are going to be more concealed and difficult to repair. There are probably more automated devices as well that can require maintenance and specialty repairs.
More bathrooms and more pipes in a large structure just provide potential for more plumbing problems. If you can smell sewage (and know it's just not a toilet issue), there could be a sewage block somewhere that will need immediate attention. Master plumbers like plumbers in Nacogdoches TX are going to be a necessity to ensure the job is handled promptly AND properly.
How many times have you gone into an office, restaurant or other type of large building and not had hot water to wash your hands? Hot water isn't quite as simple as it is for your house when you need a shower. In fact, in some areas and with some businesses, hot water is actually regulated by specific licenses and health regulations. Which leaves these businesses more prone to potential issues.
And unfortunately, if your building is a public building, then a lot of it's residents that are coming and going will not be as friendly and caring as they would if it was their own. There's always going to be someone that will leave the water running, or just intentionally try to damage some pieces that are important.
Know where your emergency shut off valves are as well. A small leak or issue could turn into a big issue if the water cannot be turned off immediately. But again, if you are the owner or manager of a commercial building, it's vital to have a professional plumbing company ready for any call...any time. In fact, it's worth having them come out for routine checks and maintenance.