Interesting! I also live in Limassol (Souni) and I went to the Muckhta today to ask him to get the water tested.
It definitely has a smell and taste to it but sometimes more than others. It ruins a good cup of tea! The water is mains water but ..... IT IS FROM A TANK. Our water is pumped from Episkopi and I believe (
although not 100% sure) that desalinated water is added to it at some stage. The water is pumped from holding tank to holding tank (4-5 levels) and arrives to us at around 400m amsl in stages.
So, maybe it has something to do with the desalinated water?
I always drink straight from the main supply and have only noticed this as a recent phenomenon.