Quick answer
What to do after water damage: stop the water, make the area safe, document everything, then start drying within 24 to 48 hours. Shut off the main valve, turn off power to wet rooms only if you can do it from dry ground, take photos and video, and move what you can off wet floors. Then call your insurer or landlord and a restoration pro so drying starts before mold has a chance to grow.
Water damage feels like chaos, but the first 24 hours follow a simple order. Safety first, then the source, then proof for your claim, then drying. Skip ahead, for example by tearing out carpet before taking photos, and you can lose money on the claim.
This guide walks you through the first day hour by hour, with the small details that matter in older Oakland homes: where the shutoff valve usually is, what the EBMUD curb valve does, and what renters need to put in writing. It is general information, not legal or insurance advice.
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Call (925) 298-0440Key takeaways
- Stop the water at the fixture or main valve before anything else. EBMUD’s curb valve at the meter is the backup.
- Never touch outlets, panels or appliances while standing in water. Electrical safety comes before cleanup.
- Photograph and film every wet room before you move or throw anything away.
- The EPA says wet materials dried within 24 to 48 hours usually do not grow mold.
- Sewage and outdoor floodwater (Category 3) are not DIY jobs. Porous materials they touch are usually removed.
- Renters should notify the landlord in writing the same day and keep a copy.
Hour by hour: the first 24 hours after water damage
The clock starts when the water does. Use this timeline as your plan for the first day. The first hour is about stopping damage, not fixing anything.
- Hour 0 to 1Stop and stay safe
Shut off the water, keep away from wet outlets and cords, and get kids and pets out of the area.
- Hour 1 to 6Protect and document
Take photos and video, move valuables, and call your insurer or landlord and a restoration company.
- Hour 6 to 24Extract and dry
Standing water comes out, wet materials are opened up, and air movers and dehumidifiers start running.
- Hour 24 to 48Measure and adjust
Moisture readings show what is drying and what needs to be removed before mold can start.
How to shut off the water, including the EBMUD curb valve
If the water comes from one fixture, like a toilet, sink or washing machine, close the small valve behind or under it first. Turn it clockwise until it stops. That is often all you need for an appliance hose or supply line leak.
If you cannot find the source, or the leak is inside a wall or ceiling, close the main shutoff valve for the house. In many Oakland homes it sits where the supply pipe enters the building, often at the front of the house near the hose bib, in the basement or in the crawl space. Older valves can be stiff. Use steady pressure, not a hammer, because a cracked valve makes things worse.
Main valve will not turn? EBMUD, the water utility for Oakland, has a curb valve inside the meter box near the street. It usually needs a meter key, and some boxes are hard to open. If you cannot close it safely, call EBMUD’s emergency line listed on your bill or on ebmud.com and ask for help.
Once the water is off, open a faucet on the lowest floor to drain pressure from the pipes. If the water heater is in the wet area, turn it off or set it to pilot so it does not run empty.
Electrical safety comes before cleanup
Water and electricity are the biggest danger in the first hour. Ready.gov’s flood advice is simple: do not touch electrical equipment if it is wet or if you are standing in water.
- Turn off power at the breaker for wet rooms, but only if the panel is in a dry spot and you can reach it from dry ground.
- If the panel is wet or in the flooded area, do not touch it. Leave the building and call your power company or an electrician.
- Unplug nothing while standing in water. Cords, power strips and floor outlets can be live.
- Stay out from under sagging ceilings. A wet ceiling can hold many gallons of water and fall without warning. Keep ceiling lights and fans off.
Have a licensed electrician check any wet appliance or outlet before you use it again.
Take photos and video for your insurance claim
Your photos are the strongest proof you have. Adjusters often arrive after cleanup has started. Take pictures before you move, dry or throw away anything.
Should you call insurance or a restoration company first? You can do both in the same hour. Most policies expect you to take reasonable steps to stop more damage, so starting emergency drying is usually fine. Just tell your insurer what is being done and keep every invoice and report.
Claim photo checklist
Tick each one off as you go. Your phone camera is enough.
All set. Back up the files to the cloud or email them to yourself so they are safe.
Know what kind of water you have
The restoration industry follows the IICRC S500 standard, which sorts water into three categories by how dirty it is. The category decides what is safe for you to touch and what has to be thrown away.
| Category | Common sources | Safe to DIY? |
|---|---|---|
| 1, clean water | Burst supply line, faucet, water heater, rain through a window | Small areas, yes |
| 2, gray water | Washing machine, dishwasher, toilet overflow with urine only | Use caution |
| 3, black water | Sewage backup, outdoor floodwater, creek or storm runoff | No, call a pro |
Clean water does not stay clean. After a day or two in carpet and wall cavities it can pick up bacteria and turn into a Category 2 job. That is one more reason the first 24 hours matter.
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What not to do after water damage
Most extra damage after a leak comes from well-meant shortcuts.
Do
- Blot or mop up small amounts of clean water.
- Put aluminum foil or plastic under furniture legs so stains do not transfer to wet carpet.
- Lift rugs, curtains and skirts off the floor.
- Open windows if the air outside is drier than inside.
- Move books, papers, photos and electronics to a dry room.
Don’t
- Use a household vacuum on wet carpet. It is not built for water and can shock you.
- Turn on ceiling fans or lights under a wet, sagging ceiling.
- Pour bleach on drywall, wood or carpet. It does not fix mold in porous materials.
- Run heat high and seal the house. Warm, still, wet air helps mold.
- Throw out damaged items before your adjuster has seen them or your photos.
If you rent: steps for tenants
If you rent in Oakland, the building’s plumbing and roof are usually your landlord’s job to repair. California Civil Code section 1941.1 lists working plumbing and effective waterproofing of the roof and walls among the basics a rental must have.
- Stop the water if you safely can, then call the landlord or property manager right away.
- Notify the landlord in writing the same day. A text or email works. Say what happened, when, and which rooms are wet. Keep a copy.
- Take your own photos and video of the damage and your belongings.
- Call your renters insurance. The landlord’s policy covers the building, not your things.
- Follow up in writing if drying has not started within a day, because wet walls left alone can turn into mold.
General information only, not legal advice. For a dispute, contact a tenant rights group or an attorney.
When to call a professional
A spill on tile that you wipe up in 10 minutes is not a restoration job. A leak that reached the walls, the subfloor or the room below usually is. Pros bring moisture meters, thermal cameras, extractors, air movers and low-grain refrigerant (LGR) dehumidifiers, and they log readings each day until materials are dry.
Do you need a pro? Quick check
Tick everything that is true for you right now.
A small clean-water spill you caught fast can often be dried with fans and a dehumidifier. Watch for odor or stains over the next few days.
This needs professional drying now. Waiting usually makes the job bigger.
Call (925) 298-0440Drywall, carpet and floors: save or replace?
Not everything wet has to go. It depends on the water category, how long it sat and the material.
| Material | Clean water, caught fast | Sewage, floodwater or wet for days |
|---|---|---|
| Drywall | Often dried in place | Cut out above the water line |
| Carpet | Often saved | Removed |
| Carpet pad | Often replaced | Removed |
| Hardwood floors | Slow drying, may cup | Often replaced |
| Insulation in walls | Usually replaced | Removed |
| Plaster and lath | Can dry, takes longer | Case by case |
Many Oakland homes built before 1950 still have plaster and lath walls and old hardwood floors. These hold water longer than modern drywall, so they need meter readings, not guesswork, before anyone closes them up.
The mold window: how long before mold grows
The EPA says that if wet or damp materials are dried within 24 to 48 hours after a leak, in most cases mold will not grow. After that, the risk climbs fast, especially in dark, still spaces like wall cavities, under cabinets and in crawl spaces.
Oakland’s cool, damp marine air slows natural drying, so a wall that looks dry on the surface can still be wet inside. If mold does show up, the EPA says patches under about 10 square feet can usually be cleaned by the homeowner. Larger areas, mold in the HVAC system, or mold after sewage water are jobs for a mold inspection and remediation pro.
The finish line is a number, not a feeling. Drying is done when moisture readings in wet materials match a dry area of the same home. Ask the crew for their daily readings.
Get the right kind of help
Different water problems need different skills. For a full overview of how jobs are handled locally, see our page on water damage restoration in Oakland, or pick the service that fits.
01 / BASEMENT FLOOD CLEANUP
Basement Flood Cleanup
Pumping, drying and sanitizing flooded basements, garages and in-law units.
Learn more02 / FLOOD CLEANUP
Flood Cleanup
Fast water extraction and cleanup after floods, burst pipes and sewage backups.
Learn more03 / MOLD INSPECTION & REMEDIATION
Mold Inspection & Remediation
Inspection, testing and safe mold removal with containment and clearance checks.
Learn more04 / STORM DAMAGE RESTORATION
Storm Damage Restoration
Tarping, drying and repair after atmospheric river storms, wind and roof leaks.
Learn more05 / MOISTURE DETECTION & LEAK TRACING
Moisture Detection & Leak Tracing
Thermal imaging and moisture mapping to find hidden leaks without guesswork.
Learn more06 / CRAWL SPACE DRYING & REPAIR
Crawl Space Drying & Repair
Drying wet crawl spaces and repairing dry rot, joists and sill plates.
Learn moreCommon questions
What to do after water damage: FAQs
What should you do immediately after water damage?
Stop the water at the fixture or main valve, then make the area safe by keeping away from wet electrical items. Take photos and video before you move anything. Then call your insurer or landlord and a restoration company.
Should I call insurance or a restoration company first?
You can call both in the same hour. Most policies expect you to prevent further damage, so emergency drying usually does not need to wait for the adjuster. Keep every report and invoice.
How long can water sit before it causes damage?
Damage starts within minutes as water soaks into drywall, wood and carpet. The EPA says materials dried within 24 to 48 hours usually do not grow mold.
Can I dry water damage with regular fans?
Fans help with a small clean-water spill on a hard floor. They do not pull water out of wall cavities, subfloors or carpet pad, and without a dehumidifier they can just move damp air around. Larger leaks need extraction, air movers and dehumidifiers with daily moisture checks.
When should drywall be removed after a leak?
Drywall is usually cut out when it was touched by sewage or floodwater, stayed wet for more than a couple of days, is swelling or crumbling, or has wet insulation behind it. Drywall hit by clean water and dried fast can often stay. Moisture readings decide.
What do I do if a pipe bursts?
Close the main shutoff valve right away, then open a low faucet to drain the lines. Turn off power to the wet area if you can reach the breaker from dry ground. Photograph the broken pipe and the damage, then call a plumber for the repair and a restoration company for the drying.
Is water from my washing machine safe to clean myself?
Washing machine and dishwasher water is usually Category 2, or gray water. It can hold soap, dirt and bacteria. Wear gloves and call a pro if it spread past one room.
Do I need to leave my home after water damage?
Not usually for a small clean-water leak. Leave if there is sewage, a sagging ceiling, a wet electrical panel or a strong musty smell. Ready.gov also advises that people with asthma or weak immune systems should stay out of buildings with leaks or mold.
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The first 24 hours decide how big the job gets. One free call connects you with an independent, licensed restoration company near you in Oakland.
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