Oh dear, I forgot you're doing a/c, too! and yes, water tasted 'funky' to me too. Back then, I found a bit of lemon helped with the taste, but that is too astringent, I think.
Just saw a come back of 'fizzies' and wonder if that would 'adjust' the water enough to be palatable. Or half a fizzie
)
I am a self dx'd Sjogrens, but in reality, don't have all the 'right' symptoms........
pattyz