That rain episode is, to coin a phrase, just a drop in a reservoir. I measured 10.8 mm today and it has now stopped raining. Our annual average here is ~400 mm, so we need a month of days like that just to reach average (we already have had ~150 mm from the autumnal rains), but we also have to make up for our profligacy of the past two years and this would need as much again to fill the reservoirs and start topping up the water tables (it would require 10 years of good rain with minimal extraction to really restore them and 20-30 years to restore those where salt water has infiltrated).
The real problem is that Cyprus has no real hydrological policy and never has had. It is aberrant that our ground is like Emmental cheese, full of illicit wells and boreholes. Even more aberrant is that if you want one legally, the Government will actually subsidise the cost of drilling it. With sensible water management, we would have more than enough natural water for everything. With the anarchy that reigns today, we can do nothing.
I was the lead co-author of
Water in Cyprus. Read it and you will find many ways how water may be wasted or saved. It was written in 1998, before I settled here but after I had bought my house. A few things have changed since, but the general lines are still valid.
Tourism: the Government has always ensured adequate supplies to the littoral hotels. However, tourists are here for ~20,000,000 person-days. Cypriots are here for 275,000,000 person-days. It is doubtful if tourists consume more than 10% of the water, less than the losses through the ancient distribution system.