Toilet internals and seals
Fill valve, flapper and flush assembly are checked as a set, and a rocking or seeping toilet is lifted to inspect the wax seal and flange rather than caulked over.
A toilet that runs all night, a tub spout that drips, or a shut-off valve that weeps every time it is turned. Independent plumbers repair the small things that waste water constantly, and replace the parts that hard water has finished off.
Hard water is the common thread. Mineral from the Edwards region builds up on cartridges, seats and aerators, which is why an Austin faucet often starts dripping long before the fixture looks old. The same deposit is what seizes an angle stop that has not been turned in years, so the first move on a leak should not be forcing a stuck valve.

These are small repairs with a large effect on a water bill, and they are worth doing properly.
Fill valve, flapper and flush assembly are checked as a set, and a rocking or seeping toilet is lifted to inspect the wax seal and flange rather than caulked over.
Cartridges, seats and aerators are inspected and matched to the fixture. Scale in an aerator explains a lot of complaints about pressure at one tap.
Angle stops that are seized or weeping get replaced while the plumber is there. A stop you can actually close is what saves the floor during the next leak.
Whether a fixture is repaired or replaced usually comes down to parts. Common brands have cartridges and kits readily available; an unusual or discontinued fixture may not, and then replacement is the practical route. Take a photo of the fixture and any brand marking before you call, as it saves a trip.
In a rental, a condo or anywhere on a shared stack, check who is allowed to authorize the work and whether the building has its own isolation valve. Austin has a lot of housing like this, and a plumber cannot start on a unit without the right permission.
A toilet that drains slowly on its own is a drain issue, covered under drain cleaning. If the meter keeps moving after the toilet is fixed, move on to leak detection. You can also read how a service call works or call for service.
It is one of the largest quiet water wasters in a house, and the repair is usually a small one. Put a few drops of food coloring in the tank and check the bowl after half an hour: color in the bowl means the flapper is passing water. Tell Austin Emergency Plumbing Pros what you saw when you call.
Mostly the parts. A common cartridge is inexpensive and quick; an obsolete fixture may need replacing instead, which brings the fixture itself into the price. Ask the provider to explain the work and options at the property before anything is opened up.
Leave it. Forcing a seized angle stop is how a small drip becomes an open line you cannot close. Use the main shutoff at the meter box if you need the water off, and have the stop replaced during the visit. See burst pipe repair if a valve has already given way.
Call and say which fixture it is and roughly how old it is.