What to Do in the First Hour After Water Damage

Discovering water where it should not be is stressful. What you do in the first hour can meaningfully reduce secondary damage and the risk of mold. Work through these steps in order, and only when it is safe.

1. Make safety the first priority

Water and electricity are a dangerous combination. If water is near outlets, appliances or the electrical panel, shut off power to the affected area only if you can reach the panel safely and dry. Never stand in water to reach electrical equipment. Treat any water from a sewage backup as contaminated and keep people and pets away.

2. Stop the source

If the water is coming from a supply line, fixture or appliance, shut off the local valve or the main water supply. Knowing where your main shutoff is—before an emergency—saves precious minutes.

3. Move what you can

Lift and remove valuables, electronics, documents and furniture from the wet area when it is safe. Even moving items a few feet can prevent damage as water spreads.

4. Document everything

Take clear photos and short videos of the source, the standing water and every affected room before cleanup. Note the time you discovered it. This record supports both your memory and any insurance conversation.

5. Start removing water—carefully

Blot and mop what you safely can. Avoid using your household vacuum on water, and in a sewage situation do not run fans, which can spread contamination.

6. Call for a professional assessment

Water travels behind walls and under floors where it is invisible. A professional uses moisture meters and thermal imaging to find hidden moisture, then places extraction and drying equipment where readings show it is needed. The sooner drying starts, the lower the risk of mold and structural issues.

If you are in San Jose or a nearby community and want an assessment, request help or call (669) 216-0503.