Standing Water Volume Calculator
Measure the wet area and the water depth to see how much water you are dealing with.
Estimates use typical industry ranges and published methods. They are not a quote. An on-site moisture inspection sets the actual scope.
What counts as a water emergency
- A supply line or pipe burst flooding one or more rooms
- A water heater tank let go in the attic or garage
- Washing machine or dishwasher flooded the kitchen and adjacent rooms
- An upstairs bathroom overflowed through the ceiling below
- Slab leak seeping up through flooring across multiple rooms
- Storm water pushed in under doors or through a damaged roof
In every one of these, the visible puddle is the small problem. The water you can't see — inside wall cavities, under wood or laminate flooring, soaked into the bottom plate of your walls — is what generates mold and structural repairs when left alone.
The professional extraction process
- Stop and assess. Confirm the source is off, check electrical safety, and identify the water category (clean, gray or black).
- Extract. Truck-mounted units pull far more water out of carpet and pad than any shop vac. Weighted extraction tools squeeze water out of the pad without lifting the carpet.
- Map moisture. Pin and pinless meters plus thermal imaging locate wet drywall, subfloor and insulation beyond the visible area.
- Set drying equipment. Air movers and LGR dehumidifiers are placed according to IICRC S500 drying calculations. See the drying equipment calculator.
- Monitor daily. Readings are logged until materials reach dry standard, usually in 3–5 days.
Done properly, a lot of flooring and drywall that looks ruined on day one can be saved — but only if drying starts fast.
Why a shop vac isn't enough
A typical 5-gallon wet/dry vac holds about 4 usable gallons. One inch of water across a 15 × 20 ft room is roughly 190 gallons — nearly 50 trips to the yard — and that is before counting what's soaked into the pad. Professional extractors recover water continuously and pull it from materials, not just the surface. Use the calculator above to size your situation.
Water removal costs
Extraction alone usually runs from a few hundred dollars for a single room to a few thousand for multiple rooms, plus drying equipment billed per day. The full picture, including tear-out and repairs, is in the water damage cost calculator.