"Affinity Water have robust procedures in place and our teams of engineers continually monitor our network and respond quickly when bursts do occur to repair problems and make sure that disruption is kept to an absolute minimum, " it added.

BBC: Surrey burst pipes 'risking drivers' lives'

Volcanologist Sonia Calvari, of the Institute of Geophysics and Volcanology in Catania (INGV-CT), said rapid advances in technology enable experts to use a wide range of methods to continually map and monitor Etna from a distance.

CNN: Keeping track of Etna's pulse