How long can lemon water sit on counter?
If I have a glass dispenser sitting on my counter filled with water and sliced lemons, how long can it sit for before I should not drink it anymore?
Honestly, we do not know for sure. Lemon has a slow oxidation rate, but we would not leave lemon water out for more than a few hours, just to be safe, especially in warm weather. Lemon juice will oxidize from air, light, and heat.
We are assuming your glass dispenser has a lid? If not, it would be a good idea to keep it covered from contaminants in the air.
We have written more information about the benefits of cut lemons and how to get the most benefits on this page: Benefits of Cut Lemons