Vik as you know I'm an a/c engineer. The water content discharged is due to the moisture content of the air and how much your car cools the air. Similar to why you get dew on grass in the morning if it's cool.
It will have been doing it from day one but is usually discharged when driving. You just won't have noticed it before. It's normal behaviour and means it's working correctly and efficiently. It means it's managing to cool the air beyond it's dew point which is good in terms of cooling.
KK