just shifted to a house and after moving in got to know about the tap situation. The house owner hasn't shown up since ages as per current roommates. Kindly view the image and suggest a solution to the low water pressure situation. I have clicked a picture of the section where water outlet is and another showing the water pressure.
Looks like a clogged aerator. Unscrew it and flush it out with water. Use a pliers and wrap the aerator in a cloth as to not scratch the finish.