A really useful BBC News feature asks this question and uses data and mapping from a number of official sources.
There has been a very dry start to the year.
There is no single definition of drought or water scarcity - the measure in Scotland - but a long period of low rainfall is needed.And it rained less than normal across almost all of the UK between March and May, the UK's sixth driest spring since records began in 1836.
So there has been less moisture to top up our rivers, reservoirs and rocks below the ground.
If that lack of rainfall continues for a long time, it can strain the water supplies that serve our homes and businesses.
In addition to rivers and reservoirs there is also groundwater, which supplies many rivers including chalk streams: one of which flows through my village.
Here are local groundwater levels:


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