How to save water

Kohelet - Ecclesiastes already said:

"What has been, is what will be and what has been done, is what will be done, and there is nothing new under the sun. "(Ecc. 1:9)
In Hebrew:

מַה-שֶּׁהָיָה, הוּא שֶׁיִּהְיֶה, וּמַה-שֶּׁנַּעֲשָׂה, הוּא שֶׁיֵּעָשֶׂה; וְאֵין כָּל-חָדָשׁ, תַּחַת הַשָּׁמֶשׁ

During the War in 1948, water was scarce in Jerusalem. People had to manage with a little of it.

The government published a poster explaining how to live with 10 litres of water a day:

• Drinking water (2 litres)
• Cooking water
• Water to clean vegetables and fruit
• Water to wash the dishes and cutlery
• Water to clean yourself
• Water to clean laundry
• Water flush the toilet and if the water is not enough use caustic soda - NaOH 2%

I found this poster in a museum in Jerusalem and hung it to remind us of saving water, which is also now scarce.