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.
Do not ignore an out of service toilet if you have a business as if this problem persist you may end up moving your business at a different place. Such out of service look unprofessional and sloppy at the same time. This may really affect your business.
Certified. Just like any other professional, a plumber comes with a certification. Make sure that you hire someone that is fully certified as a water line repair specialist. Never assume that all plumbing companies that offer these types of services come with a certification. Do your research.
If you still are not lucky in finding a good local plumber, contact your local plumbing store, they can help you in recommending a reliable and Trustworthy plumber in your area as they deal with them every day.
Call a Local plumber to set up an appointment for an inspection. You will need to be home for this service and when the work is complete, you want to be available to find out what the professional found out. If there is work to be done, depending on the severity, it might be a good idea to go ahead and schedule the next appointment for repairs.
There's water all over the floors and the basement is flooding, it is time to call someone to help with your plumbing situation. With water going everywhere, you don't have time to look around and figure out what happened and how you can fix it. When a problem arises that creates damage to your home or the area around it, you want to make the call for help. Let an expert come in, attempt to stop the flow of water, and begin to diagnose the problem.
Once the work has been completed, ask for a breakdown of the bill before it's paid. That way, you know what you're paying for and it stops the plumbers asking for more money down the line.