All Island PlumbingMassapequa, NY · Nassau & Suffolk

Serving Williston Park · ZIP 11501, 11596

Plumber in Williston Park, 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 Williston Park (ZIP 11501, 11596) in the Town of North 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 Williston Park

Based on Merrick Road, serving Williston Park

Williston Park is between Mineola, East Williston and Albertson, about 27 minutes from our office without traffic (estimate). 74% of its homes were built before 1960, neighboring Albertson and East Williston are on the county sewer, and FEMA maps little or none of it in the high-risk flood zone.

What we fix

Plumbing services in Williston Park

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

Williston Park homes & plumbing: what we see

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

74%
of homes built before 1960
Source: Census ACS 2024 5-yr, B25034
1938
median year homes were built
Source: Census ACS 2024 5-yr, B25035
10%
of homes heat with fuel oil
Source: Census ACS 2024 5-yr, B25040
74%
single-family detached houses
Source: Census ACS 2024 5-yr, B25024

A 1920s planned village.

Wikipedia says developer William Chatlos bought 195 acres here to build an affordable planned community for New York City families, that residents voted to split from East Williston, and that the village incorporated on September 8, 1926; the name honors Samuel Willis, a late-17th-century settler. It covers 0.6 square miles, all land, in the Mill River watershed, bordered by Mineola, East Williston, Albertson, Herricks and Roslyn Heights.

The Census Bureau's latest five-year survey counts about 2,700 homes, with a median year built of 1938. 8% went up in the 1950s, 54% before 1940, and 4% after 1980. 74% are single-family detached houses, 9% are two-family, 14% are in buildings of five or more units, and 79% are owner-occupied.

So a typical house here has drain and water lines around 88 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 85% of homes heat with utility gas and 10% 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.

Sewer.

Nassau County's health department list of sewer collection districts doesn't name Williston Park separately; neighboring Albertson, East Williston and Herricks are listed under the Nassau County Department of Public Works (516-571-6841). A sewer district charge on your tax bill means you're connected. 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 none of Williston Park 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: Village of Williston Park's own water system.

EPA's service-area map puts essentially all residents on the Village of Williston Park's own water system; your bill is the final word. In EPA's UCMR 5 testing, the main supplier's highest single PFOA/PFOS result was 5.6 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.

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

Local reference points: the neighboring villages of Mineola and East Williston.

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, "Williston Park, New York" (William Chatlos, 195 acres, 1926 incorporation, Samuel Willis, area, Mill River watershed, borders); Nassau County Department of Health, Public Sewer Collection Districts, Summary of Districts by Community; FEMA National Flood Hazard Layer, overlaid on the Census 2020 Williston Park 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).

Why All Island

Why Williston Park homeowners call us

  • Close byMerrick Road office in Massapequa, about 27 minutes away (free-flow estimate).

Questions

Williston Park plumbing FAQ

Do you cover all of Williston Park?
Yes, all of Williston Park (ZIP 11501, 11596), 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 the Village of Williston Park's own water 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 Williston Park?
We answer calls 24/7. We're open Monday through Saturday and closed on Sunday. Call (631) 644-2084.