I live in EU, where in most countries tap water is clean and safe and it's very common for ppl to drink it - - like I do, each day. I remember being rly RLY confused when I was doing research for getting a bp when I kept reading and coming across videos about ppl making tap water safe for their reptiles to drink by using water purifiers/filters. But as mentioned, if the water is safe for human consumption, it's safe for your animals.

I've never re-frozen a feeder, either, back when my spinner was on rat pinkys and refused to eat for 4 weeks, I just kept tossing them in the trash after refusal, lol.