Nassau County & western Suffolk
Emergency Plumber on Long IslandActive Leaks, Backups, Burst Pipes
All Island Plumbing, Heating & Cooling is a plumbing company at 5788 Merrick Rd, Suite 203, Massapequa, NY 11758, serving Nassau County and the Towns of Huntington, Babylon and western Islip in Suffolk County. For a plumbing emergency, call (631) 644-2084. We answer calls 24/7 and are open Monday through Saturday (closed Sunday).
Smell gas? Leave the house first, then call the gas utility's emergency line or 911.
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- Local office · Merrick Rd, Massapequa
- Nassau County & western Suffolk
- Licensed & insured across Long Island
- Answering calls 24/7 · Open Mon–Sat, closed Sunday
A plumbing emergency is anything that's doing damage right now: water running where it shouldn't, sewage coming up a floor drain, or a fixture you can't shut off. The first few minutes matter more than anything we do later, so this page starts with what you can do yourself before anyone arrives.
What to do first
- Water leaking or a pipe burst: close the main shutoff valve. In most Long Island houses it's on the water line where it comes through the basement or crawl-space wall, or near the water heater in a slab house, just inside the meter.
- Toilet overflowing: close the small valve behind the toilet, or lift the tank lid and push the flapper down.
- Sewage coming up a floor drain or tub: stop using water everywhere in the house. Every flush and every load of laundry adds to the backup.
- Water near outlets, a panel or appliances: stay out of the water and keep away from the electrical equipment.
- Smell gas: leave the house first. National Grid, the gas utility on Long Island, says to go outside and call 1-800-490-0045 or 911, and not to touch light switches, phones or anything that could make a spark.
What we handle
- Burst, split or frozen pipes, and active supply leaks
- Overflowing toilets and fixtures that won't shut off
- Main drain and sewer line backups
- Water heaters that are leaking or have stopped making hot water
- Leaks coming through a ceiling or wall
What we don't do
- Cesspool pumping or any cesspool work. If a cesspool is full, we can clear the house drain so you know it's the cesspool and not the line, and a cesspool or septic contractor takes it from there.
- Septic system installs. We clear the line to an existing septic tank only.
- Oil delivery, oil boiler repair, duct cleaning or vent cleaning.
- Work on the public side: a leak in the street or at the curb belongs to your water supplier, and a blocked public sewer main belongs to the sewer district.
How an emergency call works
- You call (631) 644-2084. We ask what's happening, whether the water is off, and whether anything electrical or gas-fired is involved.
- We find the source. A backup can be a single clogged fixture, the main line to the street, or the public sewer. A leak can be supply piping, a fixture, a water heater or a drain.
- We stop the damage, then fix the cause. We tell you what we found and what the permanent repair is before we start it.
Who else to call on Long Island
Gas: National Grid, 1-800-490-0045 or 911, 24 hours a day. National Grid also lists a continuous flow of water leaking from a gas heating unit or water heater as a gas emergency.
Public sewer in Nassau County: Nassau County's Department of Public Works lists the SUEZ emergency hotline, 866-224-8508, for all sewer-related issues. Villages with their own sewer systems, such as Freeport and Hempstead, have their own crews; see your town page.
Water main or curb leak: your water supplier. In Suffolk that's usually the Suffolk County Water Authority, (631) 698-9500. In Nassau it's one of many water districts, villages or private companies; your water bill names yours.
Where
Emergency Plumber near you
Town pages with local facts for this service, plus every community we serve.
Other plumbing services
Questions
Emergency Plumber FAQ
Do you answer at night and on weekends?
Where is my main water shutoff?
Sewage is coming up my basement drain. Is it my line or the street?
Should I turn off the water heater during a leak?
Do you work on Sundays?
Sources:National Grid, "Report a Gas Emergency" (Long Island) (1-800-490-0045 or 911; gas emergency examples); Nassau County Department of Public Works, Telephone/Fax Info page (SUEZ Emergency Hotline 866-224-8508, "For all sewer related issues"); Suffolk County Water Authority, 2026 Drinking Water Quality Report (customer contact number).