Emergency Plumber · Uniondale · ZIP 11530, 11553, 11590

Emergency Plumber in Uniondale, NYHouses, Townhouses and Apartments

All Island Plumbing NY handles plumbing emergencies in Uniondale (ZIP 11553, plus the Uniondale parts of 11530 and 11590), Town of Hempstead. Call (516) 360-9493. We answer calls 24/7 and are open Monday through Saturday (closed Sunday).

Call now(516) 360-9493 Answering calls 24/7 · Open Mon–Sat, closed Sunday

Smell gas? Leave the house first, then call the gas utility's emergency line or 911.

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Serving Nassau County and western Suffolk County, Long Island, NY
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Answering calls 24/7 · Open Mon–Sat, closed Sunday

Uniondale has two housing worlds side by side: 1940s and 1950s houses south of Hempstead Turnpike, and newer townhouses and apartment buildings around the old Mitchel Field. An emergency looks different in each. Our Uniondale page has the background, and the emergency plumber page has a general checklist.

In a house: the main backs up

The Census Bureau's latest survey puts the average Uniondale owner household at 3.59 people and counts 36% of homes with four or more bedrooms. Half the homes were built in the 1940s or 1950s, so the main drain is often original. When a full house runs showers, laundry and a dishwasher on a partly blocked main, the backup shows up fast at the lowest drain, usually a basement floor drain or tub. Stop every appliance that uses water and call.

In a townhouse or apartment: water from above

The survey counts 6% of homes as townhouses and 17% in buildings with ten or more units, and 21% of Uniondale homes were built in 2000 or later. In those buildings a water heater, washer or toilet supply line often sits beside or above finished rooms. A leak shows up as a ceiling stain or water along a baseboard in the unit below. Shut off your unit's valve if you can find it, tell the unit below, and call your building management if the leak may be in a shared riser. Plumbing that serves only your unit is usually yours; shared lines are the building's.

Rarely a flood

Our overlay of FEMA's flood map on the Census boundary puts only about 1% of Uniondale in a high-risk flood zone, a narrow zone A strip. Water in a Uniondale basement is almost always a plumbing failure, which means you can usually stop it at the main valve.

The water system

Most of Uniondale is in the Uniondale Water District, run by the Town of Hempstead Department of Water. The Town's lead service line inventory, filed with the state in December 2025 for all of its districts, counts 36,690 service lines, 20 of them lead, and 30,539 whose material is still unknown. A leak at the curb or meter pit on the Town's side is the Town's to fix; once it's shut off, we can repair your side.

Who to call

Inside the house or your unit, drains, water heaters and your side of the meter: us, at (516) 360-9493.
Water at the curb, in the street or at the meter pit: Town of Hempstead Department of Water, (516) 794-8300.
Sewer backing up in the street: Nassau County Public Works, 24-hour line (516) 571-6900.
Gas smell: leave, then call National Grid at 1-800-490-0045 or 911.

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Questions

Emergency plumber in Uniondale: FAQ

Water is coming through our ceiling from the apartment upstairs. Who pays?

That depends on your lease or HOA rules. First, stop the water: the upstairs unit's valves or the building's shutoff. We find the source and fix plumbing that serves a unit.

Our basement drain backs up when the washer drains. Is that urgent?

Yes. The main is partly blocked and will get worse. Stop using water and call (516) 360-9493.

Is my service line lead?

The Town's inventory still lists most lines as unknown. Look where the pipe enters the house: dull gray metal that scratches shiny may be lead. We can look at it with you.

Sources:U.S. Census Bureau, ACS 2024 5-year (B25024, B25034) and B25010, B25041 from the Census Bureau summary file; FEMA National Flood Hazard Layer overlaid on the Census 2020 Uniondale CDP boundary (Atlas, Nov. 5, 2026); New York State Department of Health, Lead Service Line Inventory summary, Town of Hempstead Water Department (NY2900000, certified Dec. 12, 2025); Town of Hempstead Department of Water, 2025 Annual Drinking Water Quality Report (district, phone); Nassau County Department of Public Works, Telephone/Fax Info page; National Grid, "Report a Gas Emergency" (Long Island).