We have the same TT and discovered water leaking from the outside edge, right behind the rear wheel. Tracked it to the water pump at the bottom of the pantry. We were on city water, but the back pressure back into the pump was enough to leak from the pump housing. And that was with a pressure regulator. There is a check valve in the pump but the seal can go bad, I guess, causing a leak. I am putting a quarter-turn on-off valve on the hose coming out of the pump that connects into the distribution line. Just leave it closed until the rare time I use the pump. Eventually Iíll replace the pump. Hope that helps.
2018 JayFlight SLX 212QBW
1999 Ford F-250 Super Duty Lariat SC, 7.3L PSD, 3.73
Transfer Flow 50 gal aux; Andersen WDH
😁 "If a man says heíll fix something, he will. Thereís no need to remind him every 6 months.