ATF: North Trail - Water Tank

Where is our fresh water tank located? To the front or back of the trailer?

It is most likely toward the back of the trailer and probably not too far behind the axles.

look for the fresh water tank drain.
Mine fresh tank in forward of the front axle.

My 22fbs has it below the drawers to the right of the sink, directly above the drain valve.

24 BHS - fresh tank is right below the water fill port (between axles), grey is just behind the rear axle, and black is about 18 inches behind the grey (in line with the toilet).

What I've discovered is all the tanks have a molded flange that allows the tank to be suspended on cross members welded to the main frame. The tanks span the entire distance between the main frame members, with no extra room. I bought a SeeLevel tank monitor system and quickly discovered there are no accessible places on the tank that are totally flat to adhere the tank sensors to, so I'm stuck with the factory sensors which aren't all that accurate.