Difference between water content and LOD:
Basically, When we talk about water content than the water content is determined by Karl Fischer titration method.
Water content basically deals with the water that is moisture only.
LOE stands for loss in drying.
Loss in the drink can be easily determined with the help of heat in the sample below its melting point in an oven.
Loss in heat method includes all volatile matter including water content and solvents.
I hope so your doubt is clear. Thank you.