To dream of seeing a leak in anything, is usually significant of loss and vexations.
Leaping For a young woman to dream of leaping over an obstruction, denotes that she will gain her desires after much struggling and opposition. See Jumping.
Loss or loss of control. Dreaming that something is leaking, such a fluid out of a container, can represent a feeling or fear of:
Something dwindling, disappearing, or being lost
Something slipping out of your hands or out of your control
Someone or something getting away from you
Information or secrets being leaked
Someone's energy, patience, or other supply running low
Integrity being compromised somehow (in a person, a container, a dam, etc.)
Your security being challenged
Also, consider what is leaking and what it represents, and what's causing it to leak.