Hydrant dream meaning is explained below using 3 different sources. Each interpretation is shown with its source.

Interpretation 1 — myjellybean

To see a fire hydrant in your dream symbolizes renewal. You are ready to make a fresh start.

A flowing hydrant is a forecast of fading worries.

A burst hydrant suggests you should express your pent up anger and feelings before they explode.

A dream of a fireman fastening a hose onto a hydrant indicates a lucky escape from potential danger.

Source: My Dream Interpretation Author: myjellybean

Interpretation 2 — Stearn Robinson - Tom Corbett

A flowing hydrant is a forecast of fading worries; a burst hydrant predicts great wealth in the future; a dream of a fireman fastening a hose on a hydrant indicates a lucky escape from potential danger.
Source: The Complete Guide to Interpreting Your Dreams Author: Stearn Robinson - Tom Corbett

Interpretation 3 — Margaret Hamilton

See “faucet”
Source: Dream Dictionary Unlimited Author: Margaret Hamilton