24/7 EMERGENCY SERVICE  ·  NASSAU & SUFFOLK COUNTY  ·  631-587-0085
NJM Mechanical & Contracting

Plumbing, Heating & Cooling In North Babylon

Our shop is on Magro Drive, which makes North Babylon our own neighborhood rather than a service area on a map. Licensed plumbing, heating, cooling, gas and contracting for homes and businesses here since 2004.

OUR HOME BASELICENSED & INSURED24/7 EMERGENCYSINCE 2004
Licensed & Insured
Master Plumber
TASK 86/87 Certified
Navien NSS Certified
22+ YEARS ON LONG ISLAND

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LICENSED & INSURED · NASSAU & SUFFOLK
PLUMBING · HEATING · COOLING · CONTRACTING

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North Babylon

Your Local Plumber, Heating & Cooling Company In North Babylon

NJM Mechanical & Contracting has been based at 31 Magro Drive in North Babylon since 2004. That is not a service-area claim on a map — it is where the trucks are parked overnight, which is why a call from a North Babylon street gets answered faster than one from the far end of the county.

North Babylon is a hamlet of roughly seventeen and a half thousand people inside the Town of Babylon, and it is unmistakably a post-war place: Census figures for the 11703 ZIP code put close to two thirds of the housing stock up between 1940 and 1959. Houses of one vintage develop one set of problems on roughly one schedule. Supply lines narrowing with corrosion, cast iron waste stacks reaching the end of their service life, heating equipment well past the age where replacing it pays for itself in fuel. We work on these houses every week.

24/7 Emergency ServiceLicensed & Insured
  • Master PlumberLicensed to pull permits
  • TASK 86/87Certified for gas work
  • Navien NSSFactory-trained on tankless

22+ years on Long Island · Plumbing, heating, cooling, gas and contracting under one roof

Before you call

Two kinds of visit. You’ll know which before we come.

We don’t charge to quote a job. We do charge to find a problem nobody has identified yet. Which one you need — and what it costs — gets agreed on the phone, so nothing about the cost is a surprise on the doorstep.

Estimate visitNo charge

You already know what you want done

A boiler replaced, a bathroom rebuilt, a gas line run. We come out, look at the job and give you a number.

No obligation
Diagnostic visitQuoted on the call

Something has failed and nobody knows why

A licensed technician and the time to find what has actually gone wrong. One rate across plumbing, heating, cooling and gas, and one number to reach us on — there is no separate line to find at midnight. You get the figure before anyone is dispatched, and after-hours, weekend and holiday work is quoted the same way.

The rate you are told is the rate

You get the number on the phone, before anyone is dispatched, and it is what you are charged when the technician arrives. One rate across all four trades — plumbing, heating, cooling and gas.

What it pays for

A licensed, insured technician carrying the certifications the work needs, and the time to find what has actually failed — not a quick look and a guess.

Watch for the bait and switch

A call-out advertised at almost nothing gets recovered once someone is standing in your basement. Get the number before anyone travels — from us, or from anyone else you call — and hold them to it when they arrive.

Financing on larger jobs

A boiler that fails in January is not a purchase anyone planned. Financing is available on the big-ticket work, so a system replacement does not have to come out of savings in one go.

What it is normally used for

Boiler, furnace and water heater replacement, a full air conditioning system, a whole-house repipe, sewer and water main work, and larger contracting jobs — kitchens, bathrooms, dormers and extensions.

When to bring it up

At the estimate, before anything is scheduled. It is worth asking even if you think you will not need it, because knowing it is there changes what you are willing to consider fixing properly.

What it does not change

The price of the job. The quote is the quote whether you finance it or not — and on a straightforward repair it is usually not worth the paperwork. We will tell you which one you are looking at.

Financing provided throughSynchronyCredit is extended by Synchrony. Subject to credit approval.
Call 631-587-0085Not sure which one you need? Call and describe it — we will tell you before we book anything.
Sewer & Cesspool

The Question To Settle Before Anyone Digs

North Babylon is not fully sewered, and that single fact decides what your drain problem is, who is legally allowed to work on it, and whether the fix you are expecting is still permitted.

Suffolk County lists North Babylon among the unsewered communities being studied for extension of Sewer District No. 3, and the Clean Water for Carlls River project is now connecting roughly two thousand homes across North Babylon, West Babylon, Deer Park and Wyandanch into that district. So the honest answer to "am I on sewer or cesspool" is that it depends on your block, and on this street it may have changed recently. Find out before you commission work, not during it.

It matters legally, not just practically. Suffolk County licenses septic industry businesses separately from plumbers, under its own article with its own endorsements — one for septic tank pumping and cleaning, one for waste line cleaning and inspection, one for conventional septic installation, others for innovative and alternative systems. A plumbing licence does not cover any of them. Anyone who tells you otherwise is telling you something about themselves.

And the Town of Babylon has a rule that surprises people. Where an accessible public sewer runs in the street abutting your lot, new plumbing must be connected to it — and that requirement extends to existing buildings when a sewer is later installed, or when an existing private sewer needs substantial repair or replacement. Read plainly: on a newly sewered block, a cesspool that has failed may not be legally replaceable in kind. The job becomes a sewer connection.

That is the part we do. We handle the house drain, the connection itself, and the plumbing inside the building, and the connection is made under permit from the Town with the inspection seen through. Where the work is genuinely on the septic side we will say so and tell you what kind of licence the job actually needs, rather than taking it on.

Quick Rules Of Thumb

  • North Babylon is named by the County as an unsewered community — but the Carlls River project is changing that block by block
  • Septic and cesspool work needs a separate Suffolk County licence with its own endorsements, not a plumbing licence
  • Where a public sewer abuts the lot, Town code requires connection
  • That extends to existing buildings when a private sewer needs substantial repair or replacement
  • No connection to a public sewer may be made except by special permit and under a Plumbing Inspector
  • Cesspools have been banned in Suffolk County for new construction since 1973
Talk It Through — 631-587-0085
What We Do Here

Every Trade, One Local Team

Emergency Plumbing & Heating

A burst pipe in North Babylon is the shortest call-out we have. We answer 24 hours a day, every day of the year.

Repipes & Supply Line Replacement

Original supply lines in post-war houses eventually restrict to the point where pressure drops and water discolours. Replacing them is one of the most common large plumbing jobs in this hamlet.

Boiler & Furnace Replacement

Heating systems in houses of this age are frequently the original equipment or its first replacement. Gas, oil and high-efficiency, installed with permits pulled through the Town of Babylon.

Air Conditioning

Central air installation and repair, plus ductless mini-splits for the converted attics and additions that Capes and ranches around here tend to acquire.

Gas Lines & Inspections

TASK 86/87 certified gas work — new lines for ranges, dryers, generators and heating equipment, plus inspections and code compliance. Note that in this Town a gas piping permit can only be issued to a Town-licensed master or restricted master plumber.

Dormers & Additions

The standard way to get real space out of a North Babylon Cape. We design, permit and build, with the plumbing and heating for the new space handled in-house.

Kitchen & Bathroom Renovations

Full renovations where the gas, water and waste are handled by our own Master Plumber-led crew rather than a subcontractor.

Commercial Service

Plumbing and HVAC for North Babylon businesses, scheduled around your trading hours where we can.

House Drains & Sewer Connections

Main house drains, house traps, and connections to the public sewer where one is available. On the newly sewered blocks this is the job that replaces a cesspool repair rather than repeating it.

Water Heaters, Including Tankless

Gas, electric and tankless. We are Navien NSS certified, so high-efficiency units get commissioned to spec and the manufacturer warranty stays intact.

Common Questions

Frequently Asked Questions

Where exactly are you based?

31 Magro Drive, North Babylon, NY 11703. We have operated from here since 2004, which makes North Babylon the shortest drive we make and usually the fastest response we give.

Am I on public sewer or a cesspool?

It depends on your block, and in parts of North Babylon it has changed recently. Suffolk County lists North Babylon among the unsewered communities studied for extension of Sewer District No. 3, and the Clean Water for Carlls River project is actively connecting homes here into that district. This is worth establishing before you commission any drain work — it changes what the job is and who is licensed to do it. Call 631-587-0085 with the address and we will help you find out.

My cesspool has failed. Can you just replace it?

Two things decide that, and neither is what people expect. First, if an accessible public sewer now runs in the street abutting your lot, Town of Babylon code requires connection to it — and that requirement reaches existing buildings when an existing private sewer needs substantial repair or replacement. On a newly sewered block a failed cesspool often has to become a sewer connection. Second, septic and cesspool work is licensed separately by Suffolk County, under its own endorsements, and a plumbing licence does not cover it. We do the sewer connection, the house drain and everything inside the building. Where the work is genuinely on the septic side we will tell you what the job actually needs rather than taking it on.

Who issues building permits in North Babylon?

North Babylon is a hamlet rather than an incorporated village, so permits go through the Town of Babylon. We pull them as part of the job and see the inspection through. One thing worth knowing about this Town in particular: plumbing and gas permits are only issued to master or restricted master plumbers licensed by the Town of Babylon own Plumbers Examining Board. A Suffolk County licence does not substitute here, because the county licensing article does not apply in a town that licenses its own.

Do I need a permit just to swap a fixture?

Probably, yes — and this is the one that catches people. Town of Babylon code does allow repairs to existing plumbing and drainage without a permit, but it expressly says those repairs do not include new soil, waste or vent pipes, connecting additional fixtures to existing soil or waste pipes or main house drains, or the replacement of existing fixtures with others. A like-for-like fixture replacement is outside the exemption. We would rather tell you that now than have you find out from an inspector.

Do I need a water softener in North Babylon?

Probably not, and we are not going to sell you one to find out. The Suffolk County Water Authority supplies this area from the Long Island aquifer system, and the US Geological Survey describes water from those aquifers as having exceptionally small dissolved solids — under forty milligrams per litre — which is the opposite of hard. What USGS does flag is that the water is commonly below pH 6.0 and therefore corrosive to pipes, pumps and plumbing, and that iron is locally excessive in places. If you have orange staining on fixtures and laundry or sediment in aerators, that is an iron and corrosivity conversation, not a softener one. If you want certainty for your own address, a test is the only honest basis for a recommendation.

What plumbing problems are common in North Babylon houses?

Most of the housing stock here went up between 1940 and 1959, so we see the same things on roughly the same schedule: supply lines corroding closed, which shows up as low pressure and discoloured water; cast iron waste stacks failing at the hubs; heating equipment at or past the end of its service life; and, on the unsewered blocks, cesspools reaching the end of theirs. None of it is unusual for houses of this age. The useful part is knowing which of them is worth fixing and which is worth replacing.

Do you handle emergencies overnight?

Yes, 24 hours a day, every day of the year. Call 631-587-0085. Regular office hours are Monday through Friday 7:00 AM to 6:00 PM and Saturday 7:00 AM to 5:00 PM.

Do you do all four trades, or just plumbing?

All four. Plumbing, heating, cooling, gas and general contracting, all with our own licensed team. That matters most on renovation work, where hiring three separate companies is where projects normally fall apart.

Are estimates free?

Yes, free and with no obligation. Call 631-587-0085, or use the form on this page and we will be in touch within 24 hours.

Service Area

Proudly Serving Long Island and Surrounding Areas.

Based in North Babylon, working across both counties — close enough to get there fast, local enough to know the housing stock and the permit offices.

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  • Long Island
  • Nassau County
  • Suffolk County

Towns We Serve

Proudly serving all of Nassau and Suffolk County, with deep local roots near our North Babylon home base.

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What Long Island Says

Reviews From Homes & Businesses We've Served

5 out of 5 stars

The experience I had with with NJM Mechanical & Contracting was a pleasant one. I had the pleasure of doing business with Neil. The work I had done was a basement entrance to my yard and it came out wonderful. The work performed as well as the communication is 10/10.

Nick UrziaJune 2026
Reviewed on Google

5 out of 5 stars

Neil has handled all my A/C needs over the years. He's very communicative and open about service charges. He never steers you wrong

Jim JacksonMay 2026
Reviewed on Google

5 out of 5 stars

As always, Neil is a pleasure to have as my plumber. He is so professional and knowledgeable. I wouldn't use anyone else! I highly, highly recommend him.

Fritzi R.May 2026
Reviewed on Housecall Pro

Read all 87 reviews from Google and Housecall Pro →

Need A Licensed Plumber In North Babylon?

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