How long do I have to worry about chicks drowning in waterer?

[Doc7]

Glad you asked this, i was just wondering the same thing this morning! Mine are only a week right now so I'll wait a couple more to switch it out.

these are my waterers and you never ever need to worry about anything like this
One waterer for days 0-10, the next one is 10’days old until the day they die. I’ve never had a chick poop in water and I change the water every 7-10 days.