Crossword Genius

Making good progress making active water source (5,4)

Ross

I believe the answer is:

going well

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

'making good progress' is the definition.
I know nothing about this answer so I can't tell whether this works.

'active water source' is the wordplay.
I cannot really see how this works, but
'active' could be 'going' (similar in meaning) and 'going' is found within the answer.
'water' could be 'well' (well water is a kind of water) and 'well' is present in the answer.
No letters remain.
This explanation may well be incorrect...

'making' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.
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