All Island PlumbingMassapequa, NY · Nassau & Suffolk

Serving Thomaston · ZIP 11021

Plumber in Thomaston, 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 Thomaston (ZIP 11021) 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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  • 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 Thomaston

Based on Merrick Road, serving Thomaston

Thomaston is at the southeastern corner of the Great Neck Peninsula, with Northern Boulevard on its southern edge, about 36 minutes from our office without traffic (estimate). 72% 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 Thomaston

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

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. No septic installs, no cesspool work.

Local know-how

Thomaston homes & plumbing: what we see

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

72%
of homes built before 1960
Source: Census ACS 2024 5-yr, B25034
1951
median year homes were built
Source: Census ACS 2024 5-yr, B25035
73%
of homes heat with utility gas
Source: Census ACS 2024 5-yr, B25040
68%
single-family detached houses
Source: Census ACS 2024 5-yr, B25024

Named by William R. Grace.

Wikipedia says the name dates to the mid-1800s, when William R. Grace, later mayor of New York City, bought land around the Great Neck LIRR station and named it Thomaston after his wife's ancestral home in Maine; that land became Great Neck Plaza. Residents voted 80 to 33 on September 17, 1931 to incorporate, and the village took the Thomaston name on October 1, 1931; University Gardens chose not to join, and Russell Gardens incorporated separately. Village Hall dates from 1971. The village covers 0.4 square miles.

The Census Bureau's latest five-year survey counts about 1,000 homes, with a median year built of 1951. 25% went up in the 1950s, 42% before 1940, and 10% after 1980. 68% are single-family detached houses, 27% are in buildings of five or more units, and 89% are owner-occupied.

So a typical house here has drain and water lines around 75 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.

Gas piping.

The ACS shows 73% of homes heat with utility gas, 9% with electricity and only 11% with fuel oil. New gas ranges, dryers and water heaters need properly sized gas piping, and a leak test after any change; we do the gas line work.

Water heaters in Thomaston.

The Census Bureau's survey puts the average owner household at 2.74 people, with a median of 6.7 rooms; 69% of homes have three or more bedrooms and 48% have four or more. A tank sized for a smaller household, or one full of sediment, is what runs out first when several people shower back to back. When a heater fails, we size the replacement to the household and the number of bathrooms, not just to the label on the old tank. Most houses here heat with gas, so the water heater is usually gas too, and it needs a sound flue, a working shutoff and a relief valve that discharges where it should; we check all three when we replace one.

On the sewer.

Thomaston is sewered. Nassau County's health department lists it under the Great Neck Water Pollution Control District (236 East Shore Rd., 516-482-0238), and Wikipedia says the small part of the village west of Middle Neck Road is in the Belgrave Sewer District instead. 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 Great Neck Water Pollution Control District (516-482-0238), or Belgrave west of Middle Neck Road.

Little mapped flood risk.

FEMA's current flood map puts under 2% of Thomaston in the high-risk flood zone.

Apartment buildings too.

The Census survey counts 27% of Thomaston's homes in buildings of five or more units and 42% built before 1940. In an apartment or co-op building, the shared stacks and mains belong to the building, so we coordinate with the board or managing agent before work that opens walls.

Water: Manhasset-Lakeville Water District.

EPA's service-area map puts about 93% of residents on the Manhasset-Lakeville Water District, with about 7% on the Water Authority of Great Neck North; your bill is the final word. The main supplier's most recent 90th-percentile lead result was 1.6 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 5.3 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.

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

Local reference points: Northern Boulevard, Colonial Road, East Shore Road, Grace Avenue and the Thomaston Tank (water tower).

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, plus B25010, B25018 and B25041 (household size, rooms, bedrooms); Wikipedia, "Thomaston, New York" (William R. Grace and the name, 1931 vote and incorporation, University Gardens and Russell Gardens, Village Hall 1971, area, roads, sewer and water utilities); Nassau County Department of Health, Public Sewer Collection Districts, Summary of Districts by Community; FEMA National Flood Hazard Layer, overlaid on the Census 2020 Thomaston boundary by Atlas (Nov 2, 2026, v6); 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 Thomaston homeowners call us

  • Close byMerrick Road office in Massapequa, about 36 minutes away (free-flow estimate).
  • Licensed & insured across Long Island.

Questions

Thomaston plumbing FAQ

Do you cover all of Thomaston?
Yes, all of Thomaston (ZIP 11021), 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 Great Neck Water Pollution Control District (516-482-0238), or Belgrave west of Middle Neck Road.
Who supplies my water?
EPA's service-area map puts about 93% of residents on the Manhasset-Lakeville Water District, with about 7% on the Water Authority of Great Neck North. Your bill says which. For leaks at the curb or meter, call the supplier; inside the house, call us.
What size water heater does a Thomaston house need?
It depends on the people and bathrooms, not the house's age. Thomaston's average owner household is 2.74 people and 69% of homes have three or more bedrooms, so we size the tank to your household and fixtures, and check the gas line or wiring, flue and relief valve when we install it.
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 Thomaston?
We answer calls 24/7. We're open Monday through Saturday and closed on Sunday. Call (631) 644-2084.