First--sure it's water, not coolant or washer fluid?
The only way I know of getting water from an engine that doesn't contain any is condensation from the AC, which might lead one to check the AC clutch. Otherwise, check around for areas where environmental water (rain, carwashing) might pool.

__________________
Craig Bethune

'97 SL500, 40th anniversary edition

'04 Olds Bravada (SWMBO's)
'06 Lexus ES330
'89 560SL (sold)


SL--Anything else is just a Mercedes.
(Kudos to whoever said it first)