Ask around. Ask your friends, ask your neighbors and get referrals. Nothing is more powerful than the testament of someone who has had a local plumber in their home and can speak to his/her capabilities.
If you need an emergency drain repair, toilet repair, or some other plumbing job completed you'd be better off to go online and find a proper business. The best businesses are almost always ranked towards the top because Google is so accurate with their searching relevancy. So if you type in your city and the word plumber you will be given the best in your area!
Good plumbers are going to have a valid license that you can check on. Look up the number they give you online and see if it is valid and if any complaints have been filed against that number. This will tell you if they are at least good and have not done anyone anything wrong. Some of the best plumbers are going to know and understand the local building codes and will be able to explain to you what is needed new toilet for the job to be in code.
Leaks can come from so many sources, so you know that this is going to take time to locate and rectify. At least in this case there Trustworthy plumber is actual evidence that can be tracked. A hidden leak can drip on and on for a long time, silently adding money to your water bill.
Once you had a master plumber on your premises, you remembered that old sink in the garage that hadn't drained since you bought the house. Luckily, your Local plumber was experienced with drain and rooter service and was able to diagnose the problem and have your drain and pipes clear again in no time. Whether the culprit is intruding willow tree roots, a Barbie doll head, clumps of hair, or maybe even more potato chunks, master plumbers can handle it all with minimal disturbance to your schedule or decor.
Before you hire a plumber, ask questions. Find out what kind of experience they have and if they offer service 24 hours a day. You can prevent many problems by fixing a plumbing issue before it gets worse. You should also find out if the contractor is reputable and check their references. Compare plumbers until you find one you can trust.
When you are ready to commission the work, ask for the quote in writing and ensure the final bill is broken down. That way, there will be no room for inconsistencies between the two figures.