Would you be worried?

To cut a long story short after cleaning my bike today I opened the fuel cap and to my demise the drain hole had blocked and some water went trickling into my fuel...
It was maybe 20 or 30ml I would guesstimate!
Is there anything I should do? Will a relatively small amount of water do harm in there?
The drain hose had a kink in it on further inspection which mind you is not the first time either. I might have to replace it with something more rigid.
What would you do? Leave it? Drain the tank? Put some sort of additive in?
Thanks guys
It was maybe 20 or 30ml I would guesstimate!
Is there anything I should do? Will a relatively small amount of water do harm in there?
The drain hose had a kink in it on further inspection which mind you is not the first time either. I might have to replace it with something more rigid.
What would you do? Leave it? Drain the tank? Put some sort of additive in?
Thanks guys
