A comment
I met with water meters back in 2001, a friend installed them in a private house, and making sure that they really save, I decided to follow her example.
Itelma counters installed on their own, the husband is well versed in plumbing. I just went after installation and wrote a statement to the housing department with a request to seal them.
Counters, like any object of use, have their own resources, after about 4-6 years they need to be changed. But even if you take into account all the costs of installing and buying new meters, it is much more profitable to exist with them.
Now it’s not so easy to install the device yourself, a lot of offices providing these services have divorced, they conclude agreements with the housing department. So, in our time, on our own, you can’t do it anymore; you will need to pay money to intermediaries for work. Counters definitely recommend!
Minuses
A few years later, a replacement device is required for a new one.