Ten Thousand Dream Interpretation

by Gustavus Hindman Miller
To dream of seeing a tub full of water, denotes domestic contentment.

An empty tub proclaims unhappiness and waning of fortune.

A broken tub, foretells family disagreements and quarrels.

The Complete Guide to Interpreting Your Dreams

by Stearn Robinson - Tom Corbett
The meaning depends on whether the tub was full or empty, what it contained, and what it was made of, so all these details must be correlated to the action.

New American Dream Dictionary

by Joan Seaman - Tom Philbin
1. A happy and secure home life (note how full the tub is).

2. Dif­ficulties in personal relationships (to see a broken or rusty tub).