1975 Ambassador low water pressure

[ovrteakettle]

I'm on city water and the water pressure is good there, but my kitchen sink and bathroom water has suddenly gone to a trickle. I'm trying to eliminate some possibilities before I call someone to come fix it. The toilet seems to be getting water fine. Would it be a fuse, the water pump or?

thanks!

[RUMSHIP]

See about the screens. There might be one at the city water inlet on the trailer. Also there's one in the sink faucet. They do clog after time with fine grit.

[TG Twinkie]

If you are on city water, the pump is not used and should be turned off. I would look for plugged screen where the hose connects since. It could be the pressure regulator.