The mania of saving water has gone out of control in Israel. Every niagara tank has a half-full handle, which lets out only half to a quarter of the water to wash down the piss or excrement. But the water siphon has a large difference in levels and such a weak stream is unable to carry the material, which lingers and accummulates in the siphon and the pipes. The WC was designed for a certain flow, and if we use less than that, it does not work properly. The saving is about 10 liter of water, costing (at Water Company prices) 0.06 shekel. The production cost of water is about 0.02 shekel at water desalination factory. Water, today, can be manufactured from sea water , which is an infinite resource. If the Water Commission is unable to authorize the establishment of those factories to produce enough water, they have to go home and let other more capable to do their job. If the problem is electricity, the Electric Corporation should increase its generation capacity, say solar or wind or atomic generation.
The saving mania has gone to such extremes in Israel that in the bijouterie precious metal coating workshop design I was asked by the Ministry to calculate the water evaporating from the tanks (its surface is about 1 sqare meter) and avoid its loss. I would have to invest about 50,000 dollars to save and recicle about 1 cubic meter per year. Production cost of 1 cu m water = 0.55 dollar. It is crazy, it is demential, it is irrational. But say something against water saving, and you are an anti-green anti-Earth ecocriminal. They are so fanatic about greenness that they are actively searching for ecocriminals, so no one dares to object to the green religion. I should be the last to talk, since my living is conditional of the official approval of my designs, but I have a lifelong record of self-defeating behaviour.