Use the Google keyword tool and type in the name of your product or service. For example, if you are a plumber, type in "Plumber". Google will then list all of the words (aka keywords) that people type in to find a service like yours. You might see common variations like "Plumbing Expert", "Plumber Services" or "Pipe Plumber".
If your service provider has adequate knowledge and training on the topic, this might be a good time to find out more about energy alternatives. He may be able to install low-flush toilets and lower-output shower heads. This is also a good time to talk about solar thermal water heating, though perhaps before the roofer is finished up top.
Second, do you have the knowledge required to solve leaking pipes/faucets and clogged drain problems? You should be able to understand the parts of the faucet, pipes, and drain. Various types of faucets are sometimes designed to function very differently. You should know how to dissemble it replace the busted part and running toilet put it back together again. If the problem is in the pipes, you should know which one you have to remove and replace.
Not all faucets have or even need interior shut-off valves. If your valve is a "frost-free" style of valve then you wouldn't need a shut off inside. Frost free valves are a style of valve in which the Trustworthy plumber water shut off for the valve is located internally in the valve inside the house. The use of a frost-free valve is best suited for locations in which an internal shut off valve is inaccessible such as a location where the walls and ceilings are all finished. This style faucet can leak over time. If you have a frost-free valve that is leaking you will need to replace the washers internally on the valve to prevent the valve from freezing and bursting.
Your septic tank has to be emptied sometimes, and there's no easy answer to when it should be done. It depends on the size of the tank and the (sorry to mention it) consistency of the stuff going into it. Basically, if the septic tank isn't pumped out regularly, it will cause you thousands of dollars worth of problems. Ask your Local plumber for advice on your septic tank maintenance.
Here's an example. Let's say you are a plumber. Will people put "plumber" into Google to try to find you? How about "plumbers"? How about "plumbing"? All of these are valid search terms, but they each reflect a different "conversation" in the mind of the searcher.
Even if you have not noticed a problem with your sewer lines, consider calling in a plumber for an inspection. If there is a problem, set up an appointment to have it repaired right away. Remember that replacement can be costly but you can save money by going with a company that will avoid trenching the yard.