You pulled the washer out to fix a hose and found a black patch the size of a shoebox on the drywall behind it, with a darker line where the water ran down. The first thing you did was search the color. This site connects you by phone with an independent local provider who does black mold removal in Henderson and across Clark County.
The crew does not treat a dark patch differently because it is dark. Color alone does not identify the species, and no species changes the sequence. What changes the job is how far the water traveled, what it soaked, and whether the source is still running. A moisture meter on the laundry wall, the floor, and the shared wall on the other side tells them that in a few minutes.
Then the room is contained. Plastic across the laundry door, the vents taped, and a HEPA scrubber pulling air out of the room so it runs under negative pressure. That happens before any drywall is cut, because a dark patch on wet board is exactly the kind that sheds when disturbed.
Shut both supply valves behind the washer and leave the machine pulled out. Photograph the patch, the hose connections, and the floor. Do not scrub it, and do not spray bleach on it; scrubbing a patch this size without containment puts spores into the air, and bleach wets the paper face while the growth in the gypsum keeps going.
Leave the air conditioning on and the thermostat fan on auto. If the laundry closet shares a wall with a bedroom, keep that door closed until the crew arrives. Note whether the patch is spreading week to week; that tells them the leak is still active.
The drywall behind the washer, the baseboard, and any insulation in the wall come out to a set distance above the meter line and go into sealed bags. The studs, the slab, and the drain standpipe stay and are HEPA vacuumed and wiped. A wet bottom plate is cut out if it reads wet after cleaning.
Drying equipment runs until the framing and the slab edge are dry. If the patch was under a kitchen sink instead, the cabinet floor usually comes out with the drywall; see mold removal for what happens to cabinets. Growth that has followed the water into the ducts is HVAC mold cleaning, and a smell that outlasts the cleanup is mold odor removal.
Henderson tract homes from the 1990s and 2000s put the laundry in a closet off the garage or the kitchen, with the washer box in the wall and the water heater a few feet away. Rubber supply hoses fail at the crimp, and the valley's hard water scales the fittings. The Southern Nevada Water Authority draws Henderson's supply from Lake Mead, and the mineral load is high enough that most houses here run a softener, which adds another drain line to the same corner.
Nevada does not license mold contractors. The provider represents its own training; the drywall and cabinet rebuild afterward is contractor work under the Nevada State Contractors Board, and a rebuild that moves plumbing needs a permit through the City of Henderson or Clark County. Nevada policies usually pay for a burst hose and exclude a slow drip, so the date you found the patch matters to your adjuster.
Have the address, which room and which wall the patch is on, and its rough size. Say whether the leak is still running, whether the patch has grown, and whether anyone has scrubbed or painted it. Call (702) 602-8512.
Standing byDescribe the leak that started it and where the growth is showing. The call goes to an independent local provider who handles mold removal and remediation across Henderson, Boulder City, and the southeast Las Vegas Valley.
A slab leak or a supply line that ran for weeks while the house sat empty, mapped room by room and cleared in zones as one project.
Coil, drain pan, and condensate line cleaned or replaced when the air handler in the garage or attic sweats through a 110-degree summer.
Growth behind a vanity, under a shower pan, or on a ceiling with no fan, removed with the supply line or drain leak fixed first.