What is the best way to detect a plumbing leak before it gets serious? 

ANSWER...

If your piping is buried and or embedded in concrete you have no way of surveying the status of your system. If your piping is exposed as in a elevated home you do have access to survey your piping. If you have copper incoming water pipes you can check those for corrosion around the joints. If you have PVC drain pipes you can also inspect the joints to see if there is any corrosion. The same goes for cast iron.

Is It Expensive To Hire A Plumber? 

ANSWER...

Small plumbing repairs like unclogging a sink or drain cleaning costs around $50 to $275, while larger jobs like fixing a water heater or sump pump can cost a few hundred dollars. Some plumbers have fixed rates for common jobs or a call-out charge which usually covers the first hour of work. It is best not to hire a plumber on price but experience to make sure you have the best experience. 

How Do I Hire A Plumber? 

ANSWER...

It is best to work with licensed plumbers, especially if your state requires licensing. Evaluate only plumbers who can deliver proof of insurance. Ask the plumber how long has he/she been in the plumbing industry. The more experience the plumber or company has, the better.