What is the average experience of your trustworthy drain leak repair installation staff or do you subcontract out the construction? Do you hire only licensed and bonded sub-contractors?
Most of these road side repairs are very easy to handle if you are prepared ahead of time. And it will surely save the day not having to wait on a repair service to find you on the highway.
This around the clock availability leads to the second thing to look for in your rescue personnel. Are they available at all hours? Saying you are and actually local water heater repair service picking up the telephone are two different matters. Do they offer at least two numbers, one for regular business hours and one for after hours? That is what you are looking for. And if they advertise dispatch vans, all the better for speedy replies.
This is simple, just boil water on the stove, pour and run this hot water on your kitchen sink before you plunge. Do this repeatedly until you unclog the sink.
Make sure that you call a plumber as soon as things start to act up. You will save a lot of money in the long run because you won't be dealing with the damages caused by flooding after the fact. Most people will find that they are not too willing to call in a professional garbage disposal early on but it is worth it. It is better to pay someone for a minor issue rather than to try and fix it yourself and end up with a huge mess.
So now you have a solid house. By that I mean, plumbing, electrical, heating and air-conditioning, roof, foundation and overall good structural integrity.
Your expert plumbers have the qualifications to do a number of plumbing jobs, but they can do more than fixing drain relines. Plumbers can also help you to perform annual backflow testing to prevent water to be contaminated.