Trailer set up question regarding water pump

Thanks for your reply!
Ok so what I mean by construction hose is just construction grade water hose. It’s heavy duty.
That’s all that means.

What do you mean before the tank? Doesn’t the pump go between the tank and the PW?
I’ll look at some filters, I have heard of some good ones for this.

I’ll look into the Hudson float valve thank you!

& I carry the water in the bed of my truck, my pickup can handle the weight.

I almost ALWAYS use the customers water so it’s never an issue but I have a bid on a parking lot where I may not have access to water so I’ll need to bring my tank.