Tap water is often cold, so a day before you expect to receive your baby chicks, it is a good idea to fill their waterer and let it sit so that the water comes to room temperature.  Drinking this water will be less of a shock to the baby chicks and will help them adapt to their new environment more quickly.

If you decide to use Gro-Gel Plus to give them an extra boost, then using room temperature water with it is also a good idea.