How to install four water meters for individual water metering?

Good afternoon. Unfortunately, this is just the problem with pipe wiring. If I understand you correctly, you want to put pipes into each room and put them on the counter.

Clause 9.22, SP 54.13330.2011 regulates the prevention of the arrangement of "wet" premises above living rooms, similarly to SanPiN 2.1.2.2645-10 P 3.8. At the same time, suppose that the neighbors from below will also do just like you, or there will be no neighbors from below. In this case, laying a pipeline will bring your room out of the status of a dwelling, which is unacceptable. The lawyers, answering the question whether this can be done, answer unequivocally - “no” and there are no such loopholes in the law so far. Access to the metering device in operation, you will not be able to admit, in violation of the technical regulations of the installation.

What to do ... Use the house-wide metering of the device and distribute the fee according to the number of residents, which is likely to cause certain disturbances. Or the second option - each tenant, using resources, records testimony before using water and after it closes the tap. This is very inconvenient - one went to the toilet, the second washes the dishes, and the third one had to wash. But today, only a common house meter for the consumption of water supply resources is the only way out of the most economical control of water consumption in communal apartments. Or you have to pay the tariff.

Settlement formulas are regulated by clause 7 of Decree of the Government of the Russian Federation dated 06.05.2011 N 354 (as amended on 23.02.2019) “On the provision of utilities to owners and users of premises in apartment buildings and residential buildings”, part II. "Calculation of the size of the utility bill provided to the consumer for the billing period in the j-th room (s) occupied by him in the i-th communal apartment."

If you had in mind the installation of 4 pipes within a communal area, then do not forget about the communal flow of water. Such manipulations will be prohibited by technical capabilities and calculations.You will not be able to do this on your own - this is called reorganization, and the punishment for this is provided for in Article 29 of the LC RF (a fine and most likely will force everyone to redo everything back at his own expense). The truth is most likely will not come to this, because metering devices simply will not be allowed to operate without certain approvals.

Unfortunately, a vicious circle comes out.