Very low water flowing from faucets when on city water

[Boudicca908]

My water was flowing fine (using city hookups) and then, after visiting a particular campsite it wouldn't flow at the next campground. At that previous site, I noticed that the water started out muddy at the spigot -- I flushed until it was clear before hookup, but I believe that the hose was clogged. Good pressure from the spigot but nothing through the hose (and I tried the filter on its own and it was fine).    Bought a new hose and it worked.