Observe the pattern
Note whether the discharge happens only during heating, continues all day or becomes a steady stream. The pattern is important because different valves perform different safety and control functions.
Do not plug a discharge pipe
Safety and pressure-control discharge points must remain unobstructed. Blocking a pipe because it drips can create a serious hazard and does not correct the cause.
Record the source if possible
Where multiple discharge pipes terminate near each other, photographs can help establish which one is flowing and whether the water is hot or cold.
Related information
Why Is My Geyser Leaking?
Water around a geyser does not automatically mean the cylinder has burst. The source, timing and discharge point matter.
A Water Leak: What to Do in the First 30 Minutes
The first half hour is about safety, isolation, protecting contents and documenting the event.
After-Hours Plumbing Emergency Checklist
The immediate objective is usually to protect people, limit water release and preserve useful information for the repair team.
Banging Pipes and Water Hammer
Banging or knocking can result from rapid valve closure, pressure changes, loose pipework or other hydraulic effects.