How soon does standing water need to be removed?
As soon as it is safe to do so. Water left on carpet, pad or a wood floor keeps moving into the materials below, and the longer it sits the more of the building will need to be opened up. Crews are dispatched around the clock, as soon as one is free, and the call line can tell you where you stand in the queue.
The reason speed matters is simple: water wicks. Carpet pad holds water like a sponge, and a wood subfloor will carry it sideways under finished flooring well past the visible edge of the pool. A few hours of standing water on the lowest floor can mean the subfloor and the bottom of the wall are wet even when the surface looks almost dry.
That is why the first call is the most useful one. The line can take the details, tell you what to do while you wait, and send a crew as soon as one is available. No arrival time is promised on the call, because crews are sent as soon as one is free and conditions on the road and at other jobs change the order.
What should I do before the crew arrives?
Stay out of standing water if the power is on near it, shut the main water valve if you can reach it safely, and move valuables and rugs out of the wet area. Take photographs of the water and the damage before anything is moved, and keep the damaged items until your insurer has seen them.
Do not wade into a basement with water on the floor if the lights, outlets or the panel are still live. Water conducts electricity, and a flooded basement is the place where the electrical risk is highest. If the power is off at the panel and you can reach it without standing in water, that is the safer step. If you cannot, wait for the crew or the utility.
Photographs help more than any written list. Take wide shots of each room, close shots of the water line on the walls and of any appliance in the water, and a few of the floor covering. Keep a note of the time you noticed the water and where it seemed to come from. Do not throw out soaked carpet or furniture until the insurer has seen it, unless it is a health hazard.
Can I remove the water myself with a shop vacuum?
A household wet vacuum can clear a small spill on a hard floor. It is not a substitute for extraction once water has reached carpet, a subfloor or a wall cavity, and it can be unsafe to run in a wet basement with power nearby.
A consumer shop vacuum is designed for dry debris and small liquid spills. Used on a deep pool of water, on carpet pad or in a space with live electrical equipment, it can overheat, trip a circuit or put a shock hazard into the water. It also leaves the moisture inside the materials, which is where the damage continues.
If the water is small, on a hard floor and away from any electrical equipment, a careful homeowner can soak up the surface water with towels while waiting for a crew. Once the water is deeper than a few centimeters, or has reached the carpet or the wall, call for extraction rather than trying to finish the job.
Why does water on the lowest floor matter so much in Spokane?
Basements and lower levels in the river valley take water first when snowmelt and rain run off the ground, and the 1974 flood in Peaceful Valley mainly caused basement and street flooding. Extraction on the lowest floor is therefore the first job in many local calls.
The Spokane County Flood Insurance Study describes spring snowmelt floods and winter rain-on-snow events as the kinds of high water that reach this area. Both produce water at ground level, which is where a basement, a crawl space and an attached garage sit. The lowest floor takes the water before any other part of the house does.
In the 1974 flood in Peaceful Valley, the damage was mainly basement flooding and water in the streets. That pattern repeats in a smaller way in any heavy snowmelt or rain year, which is why a crew sent to a Spokane basement starts at the floor and works up.