In the UK we're used to a rainy climate and not having to think twice before flushing the loo, but the reality is that the global trend is for greater year-on-year water consumption at the same time as the future security of supply looks increasingly uncertain.

Its easy to use water more efficiently
Turn the tap off while you're brushing your teeth and you can save up to five litres of water a minute.
Have showers instead of baths. 5-minute shower uses 1/3 the water needed for a bath (although a power shower might use more than a bath in five minutes).
Old toilets can use up to 9 litres of water every time you flush. Put a brick or a 'hippo' in the cistern to save water without reducing the flush effectiveness. To order a free flush-saver
www.yorkshirewater.com/doonething

Dripping taps and leaks can waste lots of water over time - get these fixed ASAP by reporting them to your landlord or residence site office.
Have a look at the tips on washing machines in the 'Saving Energy' section and only use bio-degradable detergents and cleaners (see 'Cleaning' section). Don’t unnecessarily flush tissues, cotton buds etc. down the toilet.
Investing in a Waterbutt www.yw2u.com will give you water for plants or other household activities. It can also help prevent flooding as it is being used instead of going down the drain.

Links

An Environment Agency:
www.environment-gency.gov.uk/subjects/waterres
lots of information on the future of water resource management in the UK and why its important.
Water Aid: www.wateraid.org.uk
International charity working for everyone to have access to safe water and effective sanitation.