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NY State Lic. #24-6A4P4-SHMOWe Map the Moisture Before We Start Extracting — Here’s Why That Order Matters
20-crew operation — multiple extraction teams available for multi-unit events.
Before we arrive
Four Things to Do Right Now Before the Extraction Crew Arrives
Stop the water first. Everything else comes after that.
If you can reach a shutoff valve, turn it. If you cannot find it, call your building super immediately. Do not wait.
1. Shut off the water at the source. In an NYC apartment, the shutoff for your unit may be under the sink or behind the toilet. In a high-rise, it may be in the hallway riser closet. If you cannot access it, your super or building staff can. The water has to stop running before anything else matters.
2. Stay clear of electrical appliances in the affected area. Standing water and live circuits are the most immediate hazard on any emergency water removal job. Turn off the breaker for the affected room if you can do it safely from a dry location. If you cannot, stay out of the water and wait for the crew.
3. Clear a path for equipment. Truck-mounted extraction equipment is large. Clear hallways, doorways, and the path from the building entrance to the affected unit. Every minute spent moving furniture delays the extraction.
4. Call 212-432-5803. Tell us your borough, your building type, and which floor is affected. That information helps us size the response before we arrive. A wet-dry shop vacuum cannot keep pace with the volume of a burst pipe, and it leaves absorbed moisture behind in the floor assembly — the moisture that drives mold growth in the days that follow.
NYC high-rises
Burst Pipes in NYC High-Rises: Why the Shutoff Valve Is the First Problem
In New York City’s older residential buildings, finding the shutoff valve is often harder than it sounds.
Pre-war high-rises were built with plumbing risers that serve multiple floors from a single vertical stack. The shutoff for any individual unit’s supply line may sit inside a locked mechanical room two floors below or behind a panel in a common corridor. Building staff know where it is. Tenants often do not.
The shutoff valve location is not standardized across NYC buildings. A Park Slope brownstone and a Crown Heights pre-war apartment building can have completely different riser configurations, even if they were built the same decade. The valve that controls water to your unit may require the super to physically enter a mechanical room, turn a specific valve on a specific riser stack, and confirm with you that the flow has stopped.
That process takes time. During every minute of it, water is moving. In a high-rise, water travels through the floor assembly below the source point and into the ceiling of the unit below. By the time a burst pipe is shut off in a 15-story building, three floors may be involved — which is why the containment work of water mitigation begins the moment extraction is underway.
From our dispatch base at 1419 Coney Island Ave in Brooklyn, our crews reach zip codes 11201 (Brooklyn Heights and DUMBO), 11215 (Park Slope), and 11216 (Crown Heights) within a typical local surface-street travel window. We know these buildings. We have been in their mechanical rooms.
- Pre-war risers serve multiple floors from a single vertical stack
- Valve locations are not standardized — even between buildings of the same era
- Every minute before shutoff is another floor inside the potential scope
From the field
The Moisture Map Is Not Paperwork — It Defines the Whole Job
“The visible water is the easy part. What you cannot see is where it has already gone.
I am Haim Lavi, founder of Mold Water Remediation. I started this company in Brooklyn in 2016. One of the first things I learned on emergency water removal jobs is that the visible water is not the whole story.
When a pipe fails in a high-rise apartment, the water you can see on the floor is the easy part. It runs along the top of the subfloor under the hardwood. It follows the path of least resistance into the wall cavity at the baseboard. It drops through slab penetrations and lands on the ceiling tiles two floors below. The water that left the standing pool five minutes ago is now inside the structure.
So the readings come first. We run calibrated moisture meters and thermal imaging across every affected surface on arrival — the floor, the adjacent walls, the ceiling of the unit below — before extraction equipment starts. The thermal camera identifies temperature differentials that indicate wet areas. The meter confirms and quantifies moisture at the surface. Together they produce a spatial record of the damage that defines the extraction and drying scope.
A second set of readings is taken after the standing water is gone. That pass captures what remains inside the structure once the surface is clear, and it is what the drying plan is built from. Extraction without mapping first risks missing absorbed moisture that will drive mold growth within 48 to 72 hours.
Both records serve the same second purpose: they create a baseline for the insurance adjuster. Scope disputes happen when moisture mapping is not done at the start. We do it on every job, before the truck-mounted extraction begins. Where the source is concealed rather than obvious, we run it as a standalone moisture detection and leak tracking job.
Equipment capacity
Truck-Mounted Extraction Rated for the Volume NYC Pipe Failures Produce
Consumer-grade equipment cannot match the volume a burst supply line releases.
A standard 3/4-inch copper supply line running at normal NYC water pressure can discharge more than 15 gallons per minute before it is shut off. A portable shop vacuum holds 5 to 10 gallons. The math does not work.
Mold Water Remediation arrives with truck-mounted extraction equipment — high-capacity water removal mounted in a service vehicle, operating at significantly higher volume and speed than portable units. It is the appropriate tool for large-floor-plate residential jobs, multi-unit high-rises, and commercial properties where standing water covers significant square footage.
With a 20-person crew operating from our Brooklyn dispatch location, we can deploy multiple extraction teams simultaneously. One crew extracts on the origin floor while another assesses the unit below. The job runs in parallel, not in sequence.
Same-day extraction is the single most effective action a property owner can take to limit the total damage scope. Every hour of standing water is an hour of additional absorption into the subfloor, the baseboards, and the wall cavity. The faster extraction starts, the smaller the drying scope and the shorter the overall job.
Why volume capacity decides the timeline
- Supply line
- 15+ gallons per minute until shutoff
- Shop vacuum
- 5 to 10 gallon capacity
- Truck-mount
- Continuous high-volume removal
- Submersible
- Deep pooling before extraction
- Crew
- 20 people, multiple teams in parallel
- Result
- Smaller drying scope, shorter job
The sequence
The Emergency Response Sequence: Shut Off, Map, Extract, Dry, Verify
Every emergency water removal job follows a defined sequence — the order is not optional.
Shut Off
The water source stops first. If the shutoff valve is accessible to the occupant, they handle it before the crew arrives. If it requires building staff access to a mechanical room or riser closet, building management coordinates the shutoff while we are in transit. Extraction does not begin until the source is confirmed off.
Map
Calibrated meters and thermal imaging record moisture across every affected surface on arrival — floor, adjacent walls, and the ceiling of the unit below. Readings are recorded by zone and by material type. The map defines the extraction scope.
Extract
Truck-mounted equipment is positioned and standing water is removed from floors, under appliances, and from accessible subfloor areas. Submersible pumps handle deep pooling first. A second reading pass follows extraction to capture what remains inside the structure.
Dry
Air movers and dehumidifiers are positioned to match the moisture distribution. Settings are calibrated to the materials present: hardwood subfloor dries differently than drywall, and concrete differently than either. Daily monitoring tracks progress.
Verify
When readings across all zones return to acceptable levels for the materials present, the drying phase is complete, measured against the IICRC S500 dry standard. The verification reading is documented. That document closes the job and supports the insurance claim.
Standing water right now? Every hour widens the drying scope.
Call 212-432-5803
Electrical safety
Coordinating With Con Edison When Electrical Panels Are Near the Water
Standing water near an electrical panel is a safety stop — work does not proceed until the power is confirmed off.
This is an NYC-specific reality that comes up more often than people expect. In older Brooklyn and Queens buildings, electrical panels are sometimes located in basement utility rooms, in building corridors near the main entry, or in mechanical closets adjacent to plumbing risers. When a significant water event reaches any of those locations, the panel requires attention before work continues.
Con Edison coordination — contacting the utility to de-energize circuits where standing water has reached electrical equipment — is a prerequisite before extraction crews can safely operate in those areas. This is not a bureaucratic delay. It is the step that allows the crew to work safely in the affected zone.
If water has reached a panel or junction box, we call Con Edison to request de-energization of the affected circuit or service entrance before extraction begins in that zone. Response timelines vary with call volume. We begin extraction work in the confirmed-clear zones immediately while we wait for electrical confirmation on the affected zone. It does not pause work across the entire job — only in the specific area where the electrical situation needs to be resolved first.
Coverage
Brooklyn Zip Codes We Reach Without Highway Delays
Dispatch from 1419 Coney Island Ave puts us close to some of Brooklyn’s densest residential building concentrations.
11201 — Brooklyn Heights, DUMBO
Pre-war multi-family stock reached on surface streets, no highway required.
11215 — Park Slope
Brownstones with original subfloors over uninsulated basements.
11216 — Crown Heights
Dense pre-war walk-ups where one failure regularly involves several units.
Manhattan
High-rise residential where extraction works around building access rules.
Queens & the Bronx
Multi-family buildings reached without routing through Midtown.
Staten Island
Residential properties via the Verrazzano-Narrows Bridge.
We also serve all five boroughs. Call and tell us where you are — we will tell you what we can put on site and when.
Get started
Contact Us Now — Every Hour of Standing Water Widens the Drying Scope
The faster extraction starts, the smaller the total damage scope.
212-432-5803Or email contact@moldwaterremediation.com. After 24 to 48 hours, wet organic materials in a closed NYC apartment reach the conditions for secondary mold growth.
Have this ready when you call
We will size the response and get a crew moving.
- Your borough
- Your building type
- Which floor is affected
- Whether the water is still running
FAQ
Questions People Ask While the Water Is Still on the Floor
How fast can you get a crew on site?
We run 24/7 from a single Brooklyn dispatch base with a 20-person crew, which means multiple extraction teams can deploy at once. Call with your borough, building type and affected floor and we will tell you what we can put on site and when, before you commit to anything.
Can I just use a shop vacuum until you arrive?
It will not keep pace. A 3/4-inch supply line discharges more than 15 gallons a minute until it is shut off, and a shop vacuum holds 5 to 10 gallons. More importantly, surface removal leaves absorbed moisture inside the floor assembly, and that is what drives mold growth in the days that follow. Shutting off the water and clearing a path for equipment helps far more.
Why map the moisture before extracting instead of just starting?
Because the visible water is not the scope. Water travels along subfloors and into wall cavities within minutes, and extraction alone will not find it. Readings on arrival define where drying equipment goes and create the baseline your adjuster needs. A second reading pass after extraction captures what remains inside the structure.
What happens if the water reached an electrical panel?
Work stops in that zone until power is confirmed off. We contact Con Edison to request de-energization of the affected circuit or service entrance before extracting near it. Extraction continues in the confirmed-clear zones in the meantime, so only the panel-adjacent area waits.
The unit below mine is affected too. Do they need a separate company?
No. Multi-unit events are the most common residential job we run in NYC. We map moisture across all affected units and document each zone separately, which matters when two different insurance policies are involved — the source unit’s carrier and the affected unit’s carrier each get a clear, zone-specific record.
When does emergency removal become a restoration job?
Extraction and drying are the emergency phase. Once readings confirm materials are back to dry standard, anything still damaged — flooring, drywall, finishes — falls under water damage restoration, which is scoped and documented separately for your carrier.
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