There is something wrong with the water in Tbilisi

Every time I come to Georgia, to Tbilisi for a few months, my hair starts falling at the speed of light, which never happens while I'm in Estonia. I'm Georgian-Estonian. Do others notice that? I have properties in western Georgia, and the water is much better there (I was born there, and generally, everything is better there than in Tbilisi, but anyway). I think it has to do with Tbilisi water specifically.

P.S I'm a male.