Well, I think drinking water is always good for you. I try to drink a glass an hour, which is about 1.5 liters a day. I notice that I need to urinate more often, but that's it. I get vaginal secretions the 3-4 days around ovulation.
I'm not sure if vaginal secretions can be caused by more water intake. Might need to ask a gynecologist. But, if you're sweating while walking...That's a good sign! Formerly, you were probably dehydrated and didn't know it! Plus, it's summer!!! We all sweat in the summer.
I love water! It's the best beverage. Spring water is the best, in my opinion.
What kind are you drinking???