The tap water in Lanzarote is considered to be safe to drink, however most
people agree that it doesn't taste that great.
Many of the properties here store their tap water in an Aljibe (well)
before pumping it into the house. So whilst the water that arrives in the aljibe
may be safe to drink, there’s no guarantee that it will remain so after
sitting underground for some time.
Bottled water is fairly costly at around 20c a litre a family of four could
easily spend €30 a month. Businesses spend significantly more than that.