Water for formula?

Hey mamas!

So I started out EBF my baby boy, but for many reasons had to transition to exclusively formula feeding. He will be a month old on Thursday and he's been on formula for about 2 weeks now. All of a sudden last night I had a thought that I didn't even consider until right then. Is it ok that I'm just using tap water to mix his formula?! It's obviously heated in the microwave just to take the chill out, but should I be using like distilled water or something?! I feel so guilty that I didn't even consider it until now 😢.

Thanks ladies! Hope you are all enjoying your little ones ❤️