Israel recycle 80% of it’s water, and give it back to the agriculture sector to use as grey water. And the Israeli agricultural sector is by far the smartest in it’s use of water, developing water management tech and technics. Israel has the least amount of water lost to leakage because it developed a way to track the pressure in all the pipes in the country and find the exact location of water leaks and fix them immediately. The water being misused in countries that has more renewable energy is at least as big of problem as Israel not using enough renewable energy.