Do you keep the tap running when you brush your teeth?
If the entire population of England and Wales kept their taps off we could save 180 megalitres of water every day! This would be enough to supply nearly 500,00 houses.
I am constantly amazed by how even the most insignificant individual action can have such a tremendous effect when replicated across the population.
Don't let anyone tell you that what you do, or fail to do, doesn't matter.