Crossword Genius

Water that's green welling up (5)

Ross

I believe the answer is:

evian

I'm a little stuck... Click here to teach me more about this clue!

'water' is the definition.
(mineral water brand)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for evian that I've seen before include "This water" , "springwater" , "spa town" .)

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.