A comment
Once on the Internet I came across an article about how, with the help of an aerator, for a mixer, you can save on water. I decided to buy it for myself, found an aerator in the Tescoma store, and bought it. This device is screwed onto the mixer, it is small in size. I installed it in the kitchen. Visually, I did not find a difference in the volumes of water supplied, but according to the counters I can say that savings are taking place. The nozzle can rotate in a circle, while the water is not sprayed.
The main function of the aerator is to mix water with air, making it softer. I did not see much savings, but it still happens by 20-30%. The installation is simple, I did everything myself, here even a child can cope without much difficulty. I bought rubles for four hundred, I think the thing is useful and necessary for all who have installed water meters. I will recommend it, the thing you need!
pros
saves, easy installation, not expensive
Minuses
in fact, the saving is not more than 20-30%