I don't think brits water can hurt. it removes most of the Calcium in you water
Ive used calcium dip-sticks to check and use brits water in my espresso machine.
Brita is not allowed to advertise this by law
as water softener companies more or less bribed Gov. officials for this law
at least in California
true story.
BTW you are supposed to run a full cycle in the oven before cooking in it.
check out the manual.
wait until you see how easy it cleans up after a SteamClean.