Yes another Fresh water drain location thread

[summerhummer]

Fairly new to me trailer. 2014 Laredo 320 TG but I assume it may be set up just like a laredo 303 TG in this regard possibly..... I can locate the blue drain line and a low point red and blue line.

Is it correct to assume that the blue line Which is near the water pump is the fresh water tank drain on this model? it is also close to the cold water heater...

For the amount of fresh water the tank holds it will sure take a while to let all that water out of that small hole... Or should I be looking for something else?

When I checked last night I couldn't see any other things coming out of the corrugated. I thought I might be missing another screw off type drain for the fresh water tank but since I have this corrugated stuff maybe it is the one small line? Does anybody know?

Thanks in advance for reading...