Flush less water down the toilet
Toilet flushing accounts for about a third of household water usage. You probably flush away as much water in a day as you drink in a whole month. There are easy ways to reduce this:
install a water displacement device (or hippo) in the cistern of a higher flush toilet. These reduce the amount of water used for each flush
when buying a new toilet choose a water saving, low-flush or dual-flush version
throw sanitary products and other waste in the bin, not the toilet