Help kitchen faciet leaks from spout into sink

[19 limited wolf pup 16bhs]

Hello, I am new here looking for help with figuring out why my travel trailer (which is a 2019 River Forrest wolf pup limited 16bhs) is leaking water from the faucet into the sink when city water is connected and turned on, after I currently just replaced the water filter that gets connected to hose and trailer outside. Please any on help, I did have the water pump replaced about 3 years ago when I first got this trailer.

 

[Rollin Ollen]

Welcome aboard. I would like to suggest a faucet washer might cure your problem but first, Is this the only leak you have? Do you know what pressure your city water is at? Do you have a pressure regulator installed?