Traditional call a plumber from the housing Department, the misinformation, REU or other management company is still relevant, please call the dispatcher and make a request. The phone number view in the payment for the apartment. Within a few days you'll get a call, if possible, to arrange the most convenient time for you, of course, in the middle of the week and during working hours).
Note that most of the services provided by the housing office, paid. For example, repair of all pipes, taps within the apartment is carried out according to the price list, and repair of batteries,if they are "native", produced by the administering organization. To clarify certain issues, read the Housing code and the Rules of content of common property in an apartment house, approved by the RF Government.
Please note, the big advantage of the plumbing of the housing Department that it has the ability to turn off the water at the entrance that sometimes you just need the repair of the input valves on the main riser. If repair is sufficient to block the water directly in the apartment – you can call any specialist or even try to do on their own.
If you don't trust the housing Department workers, believing that they are doing their job well enough, contact a specialised company providing similar services. Most likely, their services will cost more expensive, but a large company would give a guarantee on their work, and in the case of an emergency specialist will eliminate all faults (if it is stipulated by the contract).
If the services of a plumber you need regularly and preferably inexpensive, look for the right specialist among friends or by announcement. Not to look for every time the tap starts to leak, you must learn his phone number and name, of course, if the result of the first work arranged for you. The great advantage of private masters that they work and in the evening, and on weekends, in addition, they are encouraged to do everything as quickly as possible.