The name 「白澪」 represents a girl who is pure and cool as water.
「白澪」这个名字代表着纯洁、清越像水一样的おんなのこね
Regarding "rinntaya", this name is a combination of some fictional worldviews. in short, it has no practical significance.澪 - The chinese reading of the kanji 澪 (using kana)..