Water, Water Everywhere (Except In The Taps).

Northern Ireland is suffering water shortages despite being the wettest part of the UK. This old post by Tim Worstall about the difference in water standards in the UK is worth looking at again:

England got for profit private companies, Wales a not for profit mutual, Scotland a government run company and Northern Ireland direct government supply. In terms of cheapness of supply, higher purity of that supply and lower environmental damage from that supply a decade later the best to worst in order was England, Wales, Scotland, Northern Ireland.

It probably isn't so surprising that Northern Ireland is the place having trouble.