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.
An unqualified plumber will charge usually high service fees and provide substandard service and poor quality parts. After the plumber has completed the job, check the work. You can check to see if everything is put back together and there is no mess on the floor. As well, you should turn on the taps and flush the toilet to see if everything is running properly.
In order to summarise the best plumbers to call out to repair your condition drain repipe will be the plumbers who are able to get to you the quickest provide you with a reasonable cost and have the expertise to carry out the job and complete it correctly. Everything else is actually not worth the work.
Can you imagine the uproar there would have been if all the Trustworthy plumber around the world stuffed up and drains blocked up everywhere? Well, isn't that very similar to what has happened to our financial sector?
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.
Toilet problems: Plumbing works have to be done carefully in the toilets. Issues like clogged toilet, noisy toilet or running toilet arise when the plumbing works are not done properly or if here is any issue in the connections. When wastes get built up in the pipes, it becomes clogged and leads to lots of problems. You need to check if the pipes get cleaned automatically. When the toilet's fill valve is not fit properly nor has some issues, you need to replace it immediately to prevent any noise that comes on every flush. Also, when water keeps flowing, too much water gets wasted and in this case, you need to contact a professional plumber to solve these problems.
Without a knowledge of this home improvement area, you run the risk of creating more of a problem than you began with. You don't want to make things worse and you don't want to create any more damage, so take a step back and call a knowledgeable plumbing service to come in and take over the project.