Electricity before water
Cut the electricity first, before touching the water; most lists open with the water. Cleanup commonly runs $2,000 to $7,000, average near $4,000, and the drying window is 24 to 48 hours.
Water Damage · Basement
Flooded basement what to do, in the order that matters
Flooded basement, what to do first: kill the power, then decide what kind of water it is. Cleanup commonly runs $2,000 to $7,000, average near $4,000 (Bob Vila, read 2026-07-22). Standing water and a live circuit is the combination that kills people, so put safety first.
The first hour
Work these four in order
- 01
Power, from a dry position
Isolate the circuits before anyone steps in. If the panel is down there and you cannot reach it dry, call the power company.
- 02
Stop the source
A supply failure stops at the main valve. Groundwater stops when the weather does.
- 03
Photograph before you move anything
Wide shots, then close shots, including the water line and stored belongings. Ninety seconds now saves an argument later.
- 04
Extract, then move air
Pump or wet vacuum the standing water first. Air movers and a dehumidifier are what dry a basement.
Cited source~1:31
“Safety is the priority. Make sure you turn off the power before stepping into your basement if possible… I stepped right into the water with bare feet. Got lucky.”
"How I Do Things"
Homeowner documenting his own flooded basement - not a professional
Wisconsin, 2025
An independent source we cite. Not affiliated with Emergency Services 24H, and not a network contractor.
Watch the source
: Basement Flooded!? Do This First! (opens in a new tab)A flooded basement what to do sequence depends on order. Photograph to document the damage before you extract, and assess damage by opening cavities rather than looking at the floor. The water damage guide covers how to quickly dry, clean and sanitize what stays.
Flooded basement what to do next: identify the water
- Clear, odorless, arriving from a pipe or fitting: Category 1. Lowest risk and cheapest to restore.
- Coming through a wall or floor joint after rain: groundwater, which is Category 2 at best and worse if it has crossed soil or a yard.
- Any smell, any discoloration, or backing up through a floor drain: treat it as Category 3 and stay out.
- Anything that has sat more than a couple of days: the category has already degraded, whatever it started as.
The sump pump problem
Here is the circular problem nobody writes about: the pump that would clear your basement runs on the circuit you just switched off.
There is no clean answer, and pretending otherwise is how people get hurt: a generator running outdoors, a battery-backup pump if one is installed, or a manual pump run from a dry upstairs outlet.
What one homeowner found
One homeowner who documented his own flooded basement found the pump was not the failure: the discharge pipe could not move water as fast as it arrived, and that is the part nobody inspects.
To prevent future floods his list was plumbing rather than pumping: floor-level water alarms, a backup pump, a larger discharge pipe, regrading, and bigger gutters.
The damage is wider than the puddle
The visible water is not the affected area. He saved most of his floor planks, lost the underlayment, and found fresh mold under the bathtub only after it came out.
The boundary of the damage is established by opening things, not by where the puddle stopped.
How long a flooded basement takes to dry
Household fans and an open window will not do the same job. Basements are the hardest space to dry: cool, poorly ventilated and often below the dew point of the outside air.
Hold humidity below 60 percent, ideally 30 to 50 percent (EPA mold guidance, read 2026-09-05). A cheap hygrometer is the whole toolkit.
What to save and what to throw out
Material decides what you save and what you throw out, not sentiment.
- Hard, non-porous items survive: metal, glass, sealed plastics, solid wood furniture that has not been standing in water for days.
- Carpet padding rarely survives. The carpet itself sometimes does after professional cleaning; the padding underneath almost never does.
- Particle board and MDF are finished. They swell, delaminate and never recover their strength.
- Anything soaked by Category 3 water goes. That includes upholstery, mattresses, and cardboard-stored belongings, per EPA cleanup guidance.
What survives a soaking in more detail, including where the drywall cut line goes, is on our page about wet drywall and carpet.
Know the line
Safe to check yourself, or call a pro now
Safe to check yourself
- Isolating power from a dry position, or calling the utility
- Photographing everything before it is moved
- Extracting a small volume of clean water with a wet vacuum
- Running fans and a dehumidifier on a small clean-water spill
- Lifting stored belongings clear of the wet floor
Call a pro now
- Any sewage or suspected Category 3 water
- Water that has reached wall cavities, insulation or subfloor
- A basement with the electrical panel in the flooded area
- Anything still wet after 48 hours of your own drying
- Any occupant with asthma, mold allergy or immune suppression
24/7 dispatch network
Get a local restoration contractor moving on this
Tell us where the water came from. Local restoration contractors covering your area will contact you directly. No obligation to hire.
Fire, a gas smell, or an injury? Leave the building and call 911 first, then your gas utility or power company. Use this form once you are safe.
Will insurance cover a flooded basement?
If the source was a pipe, get the plumber to state in writing that the failure was sudden, which often separates a paid claim from a refused one. Detail is on our page on what insurance covers.
If the basement floods during heavy rain every time, that is a different problem: see our page on how to prevent basement flooding after rain.
What cleanup costs
Indicative US ranges. Always get a written quote.
| Job | Typical range | Notes |
|---|---|---|
| Flooded basement cleanup | $2,000–$7,000 | Average around $4,000 |
| Category 1, clean water | $3–$4 / sq ft | Supply-line water |
| Category 2, gray water | $4–$6.50 / sq ft | Read 2026-07-22. Appliance or groundwater |
| Category 3, black water | $7–$7.50 / sq ft | Read 2026-07-22. Sewage or flood water |
| Mold remediation, if it starts | ~$2,200 average | Read 2026-07-22. Separate from drying |
| Severe standing-water jobs | can exceed $100,000 | Read 2026-07-22. Reported extreme cases |
Source: Bob Vila 2026 water damage restoration cost data; consumer-reported figures from published cost aggregators, marked as reported (retrieved August 2026). Figures vary by region and timing.
Figures last checked
Read the category rows rather than the headline range: clean water and sewage in the same basement are a factor of two apart.
Ask any quote for the category and square footage. The breakdown sits in our guide to restoration costs.
How the matching works, and what we do not do
Emergency Services 24H is a referral service. We do not pump basements and we are not an insurance adviser.
Your request routes through Emergency Services 24H to local contractors nearby. Tell them the water source, because it decides the equipment and the category they price at.
What emergency mitigation was ever allowed to be worth
While Florida permitted these agreements, emergency work carried a ceiling, the only published figure for what this job should cost.
An assignee responding to an emergency could not take an assignment of benefits worth more than $3,000 or one percent of the dwelling limit (Florida Statutes s. 627.7152, read 2026-09-05), and every agreement gave fourteen days to rescind.
Set against real invoices
Set that against mitigation invoices, which run past it. The cap applied to the 2019 to 2022 window, so it is a comparison rather than current law.
Limits of this finding
Common questions
Straight answers
Frequently asked questions
Short, plain answers to the questions people ask us most about this page.
Browse all guidesWhat do I move first when a basement floods?
Move important items up rather than out: paperwork, photographs and anything electrical, into a dry area above the water line, after the power is isolated.
How do I clean and sanitize a flooded carpet?
Clean water caught within about 48 hours can be extracted, dried and re-laid; the padding is binned. A flooded carpet soaked by gray or black water is flood cleanup for disposal, and no attempt to sanitize and deodorize changes that.
What to do when a basement is flooded?
Isolate power from a dry position first. Then stop the source, photograph everything, extract, and get air moving. Drying beats the mold clock, not tidying.
How long does it take for a flooded basement to dry out?
Three to five days with commercial air movers and a dehumidifier running continuously, longer behind panelling. Materials dried within 24 to 48 hours mostly do not grow mold.
Will insurance cover basement flooding?
It depends where the water came from. A burst supply pipe is generally covered as sudden and accidental; groundwater is flooding, which policies exclude, and sewer backup needs an endorsement.
Who should I call for a flooded basement?
Every flooded basement what to do list ends at the same three numbers: a restoration contractor, a plumber if the source is a pipe, and the power company if you cannot isolate the electricity. That is who to call for a flooded basement. Call the insurance company early, because emergency mitigation is normally claimable.
Can I dry a flooded basement myself?
Small volumes of clean water, yes, with a wet vacuum, fans and a dehumidifier, if you start within hours. Sewage or water in cavities is a job for basement flooding cleanup companies.
How much does flooded basement cleanup cost?
Commonly $2,000 to $7,000 with an average near $4,000 (Bob Vila, read 2026-07-22), and severe standing-water jobs run far higher. Restoration is priced by category: $3 to $4 per square foot for clean water, $7 to $7.50 for black water.
Sources for this page
- U.S. Environmental Protection Agency: A Brief Guide to Mold, Moisture and Your Home: the 24–48 hour drying window
- U.S. Environmental Protection Agency
- Centers for Disease Control and Prevention: About mold: health risks, bleach dilution, and who should not clean up mold themselves
- Texas Department of Insurance: When water damage and mold are covered by insurance: sudden and accidental versus gradual and flood
- Bob Vila
Experts quoted on this page
Independent, publicly published sources, quoted with attribution and linked in full. None is affiliated with Emergency Services 24H, reviewed this page, or works in the referral network.
- "How I Do Things": Homeowner documenting his own flooded basement - not a professional, Wisconsin - “Basement Flooded!? Do This First!” (2025)
Reviewed on . If a figure here no longer matches its source, that is a bug, so tell us and we will correct it.
24/7 dispatch network
Tell us what has failed and where you are
Tell us what has failed and how soon you need someone. We route your request to local contractors covering your area, and they contact you directly.
Fire, a gas smell, or an injury? Leave the building and call 911 first, then your gas utility or power company. Use this form once you are safe.