Water Particles

Hey there
So, currently I’m working on a water particle effect.
Basically, what I want to do is make particles mimicing the water flow from taps. Which goes down a sink and then out into a drain.
However, the problem I’m facing is that whenever the particles land on the sink, they begin defying the laws of gravity and climbing up the sink.

I’ve attached pictures.
So, first two just to show the problem I’m facing of it going upwards, opposed to following gravity and going down.
The last image is purely to show the sink and why I want the water to be physically working.

Any help would be gratefully appreciated. I’ve only done particle effects like 2-3 times before. So, I’m very much new to this.