Start with where the water is coming from
Under stress, it is easy to treat every wet floor the same way. But the right first action depends on the source. A sprinkler line, a restroom supply line, a roof drain and a flooded apron have different shutoffs, different people responsible and different implications for cleaning and claims.
This guide uses simple if-then prompts. It cannot diagnose your building, and in unclear situations the safest step is to keep people away, record what you see and involve qualified help. Consider it a thinking aid for the first few minutes.
Some sources are hidden. Slab leaks from buried lines, condensate from rooftop units, drain backups and groundwater seepage can all produce a wet floor with no obvious pipe overhead. If the trail leads nowhere, mark the edges of the wet area with tape, check again after an hour or two to see whether it grows and involve a plumber who can investigate with the right tools. Recording how fast the area expands gives the investigator a useful clue about the flow.
If you see this, think about that
- IfWater is falling from the ceiling during dry weatherLook for overhead pipes, sprinkler heads or HVAC condensate; involve the fire protection party if sprinklers are involved.
- IfWater is coming from the ceiling during heavy rainSuspect the roof or drains; protect stock and keep off the roof.
- IfWater is entering at dock doors during a stormTreat as storm runoff; lift pallets and prepare for dirty water.
- IfA restroom, kitchen or water heater area is wetLook for fixture stops or branch valves; consider electrical hazards.
- IfThe floor is wet but the source is unclearLook for a trail, check pipes along walls and consider underground or slab leaks.
Source, shutoff, and next questions
- Source
- Sprinkler line
- Possible stop
- Control valve with fire protection input
- First question
- Is fire watch needed?
- Source
- Domestic supply
- Possible stop
- Fixture stop, branch or main valve
- First question
- Is the valve reachable and safe?
- Source
- Roof or drain
- Possible stop
- No valve; protection and repair
- First question
- Who owns the roof?
- Source
- Storm runoff
- Possible stop
- Barriers, door closure
- First question
- How dirty is the water?
- Source
- Water heater or equipment
- Possible stop
- Equipment supply and power
- First question
- Is power isolated?
Source clues over time
Patterns can hint at causes.
- Overnight or weekend after cold
- Freeze-related pipe damage is possible once things thaw.
- During or after rain
- Roof, drain or runoff sources are more likely.
- Steady, small increase
- A slow supply leak or condensate issue may be at work.
- Sudden large flow
- A burst line or sprinkler release is more likely.
Common questions
What if more than one source is involved?
It happens, especially in storms. Address safety first, then handle each source with the right party.
Is the source relevant to claims?
Often yes, because coverage may depend on the cause, so record what you observed.
General information for Commerce City, not a quote or professional advice. In an emergency, call 911.