The jug is a symbol of good luck. If the jug is full, then this is very good luck.
A jug in your dream symbolizes innocence, chastity and virginity. Alternatively, the pun may be dreaming of "jugs". Especially, if the jug is filled with milk, it brings out maternal instinct or natural strength.
Seeing an empty jug in your dream means that something is missing in your life.
Seeing a broken or cracked jug in your dream indicates infidelity.