All Island PlumbingMassapequa, NY · Nassau & Suffolk

Serving Malverne · ZIP 11565

Plumber in Malverne, NYEmergency Plumbing, Drains, Sewer Lines & Water Heaters

All Island Plumbing, Heating & Cooling is a plumbing company at 5788 Merrick Rd, Suite 203, Massapequa, NY 11758, serving the Village of Malverne (ZIP 11565) in the Town of Hempstead, Nassau County. Call (631) 644-2084. We answer calls 24/7 and are open Monday through Saturday (closed Sunday).

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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

Local to Malverne

Based on Merrick Road, serving Malverne

Malverne is between Lynbrook, West Hempstead and Valley Stream, about 22 minutes from our office without traffic (estimate). 87% of its homes were built before 1960, it is on a public sewer, and FEMA maps little or none of it in the high-risk flood zone.

What we fix

Plumbing services in Malverne

Plumbing only. Don't see your problem? Call and ask.

Emergency Plumber

Burst pipes, active leaks, overflowing fixtures.

Burst Pipe Repair

Split, burst or frozen pipes located and repaired.

Drain Cleaning

Kitchen, bath, laundry and main lines.

Sewer Line Repair & Hookups

Roots and breaks in the line from the house to the street sewer, and new connections where a sewer is available.

Backwater Valve Installation

A valve on the house sewer line that closes if the street sewer backs up, so sewage can't come in through basement floor drains.

Water Heater Repair & Installation

Tank-type, gas and electric.

Leak Detection & Repair

Hidden supply leaks, wet ceilings, unexplained high water bills.

Gas Line Installation & Repair

Oil-to-gas switches, ranges, dryers and gas water heaters.

Bathroom & Kitchen Plumbing

Fixtures and remodel plumbing.

Water Filtration

Whole-house and under-sink systems sized to your water report.

Septic Line Clearing

We clear the line from the house to an existing septic tank. No septic installs, no cesspool work.

Local know-how

Malverne homes & plumbing: what we see

Real numbers from public sources, and what they mean for your pipes.

87%
of homes built before 1960
Source: Census ACS 2024 5-yr, B25034
1941
median year homes were built
Source: Census ACS 2024 5-yr, B25035
16%
of homes heat with fuel oil
Source: Census ACS 2024 5-yr, B25040
95%
single-family detached houses
Source: Census ACS 2024 5-yr, B25024

Norwood, then Malverne (with an "e").

Wikipedia says Ocean Avenue began as a Rockaway Indian path, that the Abrams, Bedell and Pearsall families farmed here from the 1700s, and that the area, then called Norwood, voted to incorporate as a village in the early 1920s. The name was first spelled Malvern, after the English town; no one is sure why the "e" was added. The village covers 1.0 square mile, all land.

The Census Bureau's latest five-year survey counts about 3,200 homes, with a median year built of 1941. 15% went up in the 1950s, 49% before 1940, and 2% after 1980. 95% are single-family detached houses, and 96% are owner-occupied.

So a typical house here has drain and water lines around 85 years old unless they've been replaced. Slow drains in several fixtures, a gurgling floor drain or rusty water from one tap are signs to have the main line and supply piping checked. With so many pre-1940 homes, some still have galvanized or older supply piping in the walls; we plan repairs around what's actually there.

Oil to gas means new gas piping.

The ACS shows 81% of homes heat with utility gas and 16% with fuel oil. Switching means properly sized gas piping to the new equipment, and often to the water heater, range and dryer. We do the gas line work. We don't sell or deliver oil.

On the sewer.

Nassau County's health department lists Malverne's sewers under the Nassau County Department of Public Works (516-571-6841). A backup that stops at your house is usually in your own line to the street; we clear it and repair or replace the line. If neighbors are backed up too, call the county at 516-571-6841.

Little mapped flood risk.

FEMA's current flood map puts under 2% of Malverne in the high-risk flood zone. A backwater (sewer check) valve is still worth considering for a finished basement on a sewered street: it closes if the street sewer backs up. We install them.

Water: Liberty Utilities New York's Lynbrook system.

EPA's service-area map puts essentially all residents on Liberty Utilities New York's Lynbrook system; your bill is the final word. Liberty's 2026 report on 2025 water for its Lynbrook Operations District says caustic soda or lime raises the pH to cut corrosion of household plumbing and iron is filtered out at 13 of its 20 well sites; total hardness ran 4.2 to 58.6 mg/L, which is soft. Across the whole district, Liberty's state-filed inventory counts 3,700 lead service lines and 15,239 of unknown material, so if your house predates 1940 it's worth knowing what your service line is. In EPA's UCMR 5 testing, the main supplier's highest single PFOA/PFOS result was 5.1 parts per trillion. EPA's 4 ppt limits apply as a running annual average starting in 2029, so one high sample is not a violation, but it's the kind of number a carbon filter is sized against. For a leak at the curb or in the street, call your water supplier. For anything on your side of the meter, call us.

Permits.

Malverne is an incorporated village, so plumbing permits go through the Village of Malverne's building department, not the town.

Local reference points: Ocean Avenue, once a Rockaway Indian path.

Sources:U.S. Census Bureau, 2020 Census (PL 94-171) and ACS 2024 5-year (B25034, B25035, B25024, B25003, B25040) from the Census Bureau's 2024 ACS summary file; Wikipedia, "Malverne, New York" (Ocean Avenue path, early families, Norwood, incorporation, Malvern spelling, area); Nassau County Department of Health, Public Sewer Collection Districts, Summary of Districts by Community; FEMA National Flood Hazard Layer, overlaid on the Census 2020 Malverne boundary by Atlas (Nov 1, 2026, batch c); U.S. EPA Community Water System Service Area Boundaries and UCMR 5 results via CityTapWater (supplier shares, estimate); Liberty Utilities New York, Lynbrook Operations District 2026 Consumer Confidence Report (2025 data) and state Lead Service Line Inventory summary.

Why All Island

Why Malverne homeowners call us

  • Close byMerrick Road office in Massapequa, about 22 minutes away (free-flow estimate).

Questions

Malverne plumbing FAQ

Do you cover all of Malverne?
Yes, all of Malverne (ZIP 11565), plus the neighboring communities listed below.
Sewage came up through my basement floor drain. Who do I call?
If it's only your house, the blockage is usually in your line to the street: call us. If neighbors have it too, the public sewer may be backed up: call the county at 516-571-6841.
Who supplies my water?
EPA's service-area map puts essentially all residents on Liberty Utilities New York's Lynbrook system. Your bill says which. For leaks at the curb or meter, call the supplier; inside the house, call us.
Can you handle the gas piping when I switch from oil to gas?
Yes, we install and repair gas lines for heating equipment and appliances.
When can I reach you in Malverne?
We answer calls 24/7. We're open Monday through Saturday and closed on Sunday. Call (631) 644-2084.