About 15 liters
Just do not leave water running when brushing your teeth or when washing hands
Much lesser than washing
Use soap? And/or alcohol wash. Water's a good idea, unless you use the alcohol wash Which doesn't need water.
approximately 18 litres a day! that's washing you hands 4 times. 4.5 litres each times
Yes the hot water kills more germs than cold water.
Use just enough water to thoroughly clean the vegetables.
Not really. you do wash away some germs but you get more germs because of using sink water, unless you wash your hands in purified water i suggest you use soap
Wash up in a bowl - instead of the sink. Only use the washing machine when you have a full load. Use a shower instead of a bath. Only water the garden when absolutely necessary.
I would use vaseline (petroleum Jelly). Work the vaseline into the skin and then washing your hands in warm, soapy water.
No. You have to have clean hands to put them on and are liable to get your hands dirty taking them off. You also have to have a new pair anytime you touch a different ingredient. Why would you want to do that anyway washing your hands is much much cheaper and even in places you are required to wear gloves you need to wash your hands a lot.
The average washing machine is said to use 65 liters of water per cycle. It is more energy efficient to fully load the washing machine because a half wash uses the same amount of water as a full wash.