Water Pressure

My filter was no good after two days.

We used it on a two night trip and then when we hooked it up on another trip a month later it would not allow any water to flow through it.   I tried to back flush it just didn't want to allow anything more than a trickle through it. Not sure if I'm going to use a filter going forward after this.

I agree that the filter can be clogged, even though it is relatively new. I had one that did not have much use but the flow rate was decreasing. Although they say that they are supposed to last for a season (I think that is defined as 3 months), I don't think that they actually last that long with full output. As the media filters out undesirable items, the media won't let water flow through as easily.

As for pressure regulators, they are recommended. The plumbing in the R-Pod should not be subjected to high pressure. Some city water supplies can have a pressure 80 psi or higher.  There are different types. The simplest is a brass fitting that limits pressure to 40-50 psi. Other models have gauges so you can see the pressure. Others still are adjustable. If you get an adjustable one, note that it does not work like a faucet. Tightening the regulator's adjustment screw raises the pressure. It is the opposite of a valve where tightening it turns the water off.

I always like connecting the filter at the Pod end in case anything got into the hose that needs to be filtered out.

I do have a water filter that is relatively new.  Only about 20 days use.  I also have an elbow tha I attach to the trailer prior to attaching the hose or filter.  I do not have a pressure regulator and will probably get one.  Is there a particular type that I should get?  Does it matter if i attach the filter at the spigit or at the trailer?

Check the faucet, unscrew the tip of it and the screen check both for debris. A lot come through with debris from the lines.