The back of our card says various plumbing jobs, and that is honestly the best description of it. Taps, toilets, leaks, water lines, drains, shut off valves, and the small things that turn into big things when they are left.
Find your main shut off valve now, before you need it, and make sure it turns. It is usually in the mechanical room near where the water comes into the house. A valve that has not been moved in a decade often will not move at all, and the moment you find that out is normally the moment water is coming through a ceiling.
While you are down there, look at the flexible hoses feeding the toilets and the washing machine. They have a lifespan, they fail without warning, and they are cheap. That is not a sales pitch, it is the single most common cause of a wrecked floor and a very bad afternoon.