I wish not something I'm particular fond of but pretty sure I have the worst tap water on site
.. I can thank a local vinegar plant for that our town has it's own water supply.. Only one in the county our water actually supplements the county's water supply but we don't see any of their water.. Took me a little digging but friend of friend works for the water authority and gave us the low down.. Its a messed up deal
That would be fine for the seedlings too