How long can DS1 get away with drinking next to nothing?

[OopsDoneItAgain]

He is nearly 5. When he was 18 months old he one day refused to drink water any more. I managed to tempt him to drink with diluted apple juice, which he has had ever since. However, dentist keeps nagging me so we have come off the juice back to water. Its 3 weeks now and, just like when he was 18 months, he is point blank refusing to drink water (or any kind of squash either)He has a small glass of milk morning and night and that is it. So, will he crack eventually, or will he make himself poorly, or is he ok as he is? Bizarrely, his wee doesnt seem like he is particularly dehydrated as yet!

does he eat a lot of water rich food like fruit? That is probably helping

It is one of the great myths of parenting, that if you only offer water or milk they will happily drink those.

I ended up giving my ds squash.

Oops,
I've drunk very little all my life - it used to drive my mum mad. I drink more water now (I'm 30) than I ever would have in the past because I fear UTIs but I just don't seem to need as much as other people. He might be fine.

if his wee is ok, he is ok.

there is water in food as stated.

understandable concern in summer though.

Yes HC he eats a lot of fruit, I guess that must be keeping his fluids up.

(It is indeed a myth..!)

He drinks loads if its diluted juice, but nothing if water or squash.

Yes, I guess if he is fine and wee is ok then I need to chill. He is soooo stubborn tho!

Thanks for replies!