All Island PlumbingMassapequa, NY · Nassau & Suffolk

Serving Lloyd Harbor · ZIP 11724, 11743

Plumber in Lloyd Harbor, NYEmergency Plumbing, Drains, Gas 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 Lloyd Harbor (ZIP 11724, 11743) in the Town of Huntington, Suffolk 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 Lloyd Harbor

Based on Merrick Road, serving Lloyd Harbor

Lloyd Harbor is on Lloyd Neck and West Neck, with water on three sides, north of Huntington, about 44 minutes from our office without traffic (estimate). 32% of its homes were built before 1960, most homes are on cesspools or septic systems, and about 19% of it is in FEMA's high-risk flood zone.

What we fix

Plumbing services in Lloyd Harbor

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 cesspool or septic tank. We don't do cesspool work.

Backwater Valve Installation

For homes on a public sewer: a check valve on the house line that closes if the street sewer backs up, so sewage can't come in through basement 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. We don't install septic systems, and we don't do cesspool work.

Local know-how

Lloyd Harbor homes & plumbing: what we see

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

32%
of homes built before 1960
Source: Census ACS 2024 5-yr, B25034
1966
median year homes were built
Source: Census ACS 2024 5-yr, B25035
76%
of homes heat with fuel oil
Source: Census ACS 2024 5-yr, B25040
~19%
in FEMA's high-risk flood zone
Source: FEMA NFHL, Atlas overlay (Nov 2026)

Caumsett and the Lloyd manor.

Wikipedia says the Matinecock sold 3,000 acres of what's now Lloyd Neck to English settlers in 1654; James Lloyd acquired the neck in 1676, and the Joseph Lloyd Manor House followed in the 1760s. Lloyd's Neck moved from Queens County to the Town of Huntington in 1886, and Lloyd Neck and West Neck incorporated together as Lloyd Harbor on August 16, 1926. In 1969 residents defeated a proposed LILCO nuclear plant; the Eberstadt estate became Target Rock National Wildlife Refuge. The village covers 10.6 square miles, 12% of it water.

The Census Bureau's latest five-year survey counts about 1,300 homes, with a median year built of 1966. 18% went up in the 1950s, 13% before 1940, and 27% after 1980. 90% are single-family detached houses, and 97% are owner-occupied.

So a typical house here has drain and water lines around 60 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.

Oil to gas means new gas piping.

The ACS shows 17% of homes heat with utility gas and 76% 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.

Cesspools and septic, mostly.

Laying Suffolk County's sewer-district map over the Census boundary shows none of the hamlet in a county sewer district, so most homes rely on cesspools or septic systems. We clear the line from the house to the system, but a full or failing cesspool is a job for a cesspool or septic contractor; we don't do cesspool work, and we don't install septic systems.

Flood risk.

Laying FEMA's current flood map over the Census boundary, about 19% of Lloyd Harbor is in the high-risk (1% annual chance) flood zone (13.5% in zone VE, 5.7% in zone AE; shares of the Census area, water included). If your water heater or gas appliances ever sat in flood water, have them checked before relighting.

Oil heat and long drain lines.

The Census counts 76% of Lloyd Harbor's homes heating with fuel oil. With big lots and no public sewer, a slow drain is often in the long line out to the cesspool or septic system rather than inside the house; we clear and repair the line, and send cesspool pumping or replacement to a cesspool contractor.

Water: Suffolk County Water Authority (SCWA).

EPA's service-area map puts essentially all residents on the Suffolk County Water Authority (SCWA); your bill is the final word. The main supplier's most recent 90th-percentile lead result was 1.3 ppb, under the 15 ppb action level; lead usually comes from a home's own pipes and fixtures, so results vary house to house. In EPA's UCMR 5 testing, the main supplier's highest single PFOA/PFOS result was 17 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 (SCWA: (631) 698-9500). For anything on your side of the meter, call us.

Permits.

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

Local reference points: Caumsett State Historic Park, Target Rock National Wildlife Refuge and the Joseph Lloyd Manor House.

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, "Lloyd Harbor, New York" (1654 sale, Caumsett, James Lloyd 1676, Joseph Lloyd Manor House, 1886 county change, Aug. 16, 1926 incorporation, 1969 LILCO plant and Target Rock refuge, area and water); Suffolk County GIS Sewer Districts layer, overlaid on the Census 2020 Lloyd Harbor boundary by Atlas (Nov 1, 2026, batch e); FEMA National Flood Hazard Layer, overlaid on the Census 2020 Lloyd Harbor boundary by Atlas (Nov 1, 2026, batch e); U.S. EPA Community Water System Service Area Boundaries, UCMR 5 and lead 90th-percentile results via CityTapWater (supplier shares, estimate).

Why All Island

Why Lloyd Harbor homeowners call us

  • Close byMerrick Road office in Massapequa, about 44 minutes away (free-flow estimate).
  • Licensed & insured across Long Island.

Questions

Lloyd Harbor plumbing FAQ

Do you cover all of Lloyd Harbor?
Yes, all of Lloyd Harbor (ZIP 11724, 11743), plus the neighboring communities listed below.
Is Lloyd Harbor on a sewer or a cesspool?
Most homes here use a cesspool or septic system; a sewer district charge on your tax bill means you're connected. We clear the house drain line, but cesspool pumping or replacement is for a cesspool or septic contractor.
Who supplies my water?
EPA's service-area map puts essentially all residents on the Suffolk County Water Authority (SCWA). 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 Lloyd Harbor?
We answer calls 24/7. We're open Monday through Saturday and closed on Sunday. Call (631) 644-2084.