Sewer Lateral Repair
The line from the house to the street, repaired at the failed section when the rest of the pipe is sound.
Plumbing
Sewer Line Repair & Replacement On Long Island
A sewer line that keeps backing up is telling you something. NJM finds out what, whether roots, a sag or a cracked section, and fixes the line itself for homes and businesses across Nassau and Suffolk County.
SEWER LINESMAIN DRAINSROOT DAMAGEREPAIR & REPLACE
Licensed & Insured
Master Plumber
TASK 86/87 Certified
Navien NSS Certified
22+ YEARS ON LONG ISLANDGet Your Free Estimate
LICENSED & INSURED · NASSAU & SUFFOLK
PLUMBING · HEATING · COOLING · CONTRACTING
Have An Emergency? We’re Available 24/7.
631-587-0085WE ANSWER EVERY CALLPlumbing
Fix The Line, Not Just The Backup
Clearing a blocked sewer line gets the house draining tonight. It does nothing about why it blocked. When the same line backs up again and again, the cause is almost always the pipe itself: roots growing through a joint, a section that has sagged out of grade, or old pipe that has cracked or collapsed. That is when the line needs repairing or replacing, not snaking for the fourth time this year.
NJM repairs and replaces sewer and main drain lines for homes and businesses across Nassau and Suffolk County: the lateral that runs from the house out to the street, the main drain under the basement, and the cleanouts that let the line be serviced. And because NJM is also a general contractor, the concrete, walkway or finished floor that has to be opened is put back by the same team, not handed off to a second company.
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
What We Do
Sewer & Main Line Services
Full Line Replacement
When the old line has failed along its length, a new PVC line laid at the correct pitch so waste actually flows.
Under-Slab & Main Drains
Main drain lines under basement and garage floors, opened up, repaired or replaced, and the concrete put back.
Cleanout Installation
Accessible cleanouts added so the line can be cleared in minutes next time, without pulling a toilet or cutting into anything.
Commercial Sewer Lines
Restaurants, stores, offices and multi-family buildings across Nassau and Suffolk County.
Root Damage Repair
The joint or section roots are getting through, repaired so the roots stop coming back.
Repeat Backup Diagnosis
We find out why a line keeps blocking before recommending anything, so you are not paying for the wrong fix.
Restoration Included
Lawn, walkway, concrete or finished floor that had to be opened, put back by our own contracting team.
Plumbing — 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.
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.
Warning Signs
When A Sewer Line Needs More Than A Clearing
One blockage is bad luck. A pattern is the pipe telling you it has failed.
Backups That Keep Coming Back
Cleared in spring, blocked again by fall. A line that needs clearing more than once a year has a fault in the pipe, and clearing only buys time.
Every Drain Slow At Once
When the sinks, tub and toilets all drain slowly together, the problem is not one fixture. It is the main line they all share.
Gurgling Toilets & Drains
A toilet that gurgles when the washer drains, or a sink that bubbles when someone showers, means water is struggling to get past something in the line.
Sewer Smell, Inside Or Out
A sewer odour in the basement or along the side of the house can mean a cracked pipe or a failed joint letting gas and waste escape.
A Soggy Or Sunken Strip Of Yard
A wet patch, a dip in the lawn or a strip of unusually green grass along the line’s route can mean the pipe underneath has broken.
Roots In The Line
Tree roots find the smallest gap at a joint and grow toward the water. Common on older Long Island properties with mature trees, and they come back after clearing unless the joint is fixed.
Old Original Pipe
Many older Long Island homes still have their original cast iron, clay or tar-paper sewer pipe, all of which crack, corrode or flatten with age.
Sewage In The Basement
Waste coming up through a floor drain is an emergency. Stop using water anywhere in the house and call 631-587-0085, 24 hours a day.
Straight Answer
Repair The Section, Or Replace The Line?
If the damage is one joint or one short section and the rest of the pipe is in good shape, repair that section and keep the rest. That is less digging and less money.
If the line is old original pipe and failing in more than one place, replacing it is usually the better money, because fixing it a section at a time means paying for the same dig over and over. We will tell you which one you have before you spend anything, and if a good clearing really is all it needs, that is what we will do.
More Plumbing Services
Everything We Handle In Plumbing
One licensed team, one number to call, across Nassau and Suffolk County.
Fall Specials
Money Off, Plainly Stated
What it says on the coupon is what comes off the bill. Mention it when you call.
Common Questions
Frequently Asked Questions
How do I know if my sewer line is broken and not just clogged?
The giveaway is repetition. A clog that is cleared and stays clear was a clog. A line that blocks again within months, several drains that slow down at once, a sewer smell, or a soggy strip of yard along the line all point to damage in the pipe itself. Call 631-587-0085 and we will tell you which you are dealing with.
Do you replace the whole line or just the broken part?
Whichever the line actually needs. If one section has failed and the rest is sound, we repair the section. If the pipe is old and failing in several places, we will recommend replacing it, and explain why, so you are not paying for the same dig twice.
Will you have to dig up my yard or my basement floor?
Usually some digging, yes, at the damaged section or along the line’s route. We open only what the job needs, and because NJM is also a general contractor, the lawn, walkway, concrete or floor is put back by the same team.
Can tree roots be stopped for good?
Clearing roots out of a line works, but they grow back through the same gap. Stopping them for good means repairing or replacing the joint or section they are getting in through. We will be straight about which one you need.
Sewage is coming up in my basement. Is that an emergency?
Yes. Stop running water and flushing toilets anywhere in the house, keep clear of the water, and call 631-587-0085. The line is answered 24 hours a day, every day of the year.
Do you work on commercial sewer lines?
Yes. Restaurants, stores, offices and multi-family buildings across Nassau and Suffolk County, including grease-loaded kitchen lines.
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.
Find Plumbing Services Near You!
- Long Island
- Nassau County
- Suffolk County
Towns We Serve
- North Babylon
- Babylon
- West Babylon
- Deer Park
- Lindenhurst
- Farmingdale
- Massapequa
- Hicksville
- Dix Hills
- Commack
- Islip
- Hempstead
- North Hempstead
- Rockville Centre
Proudly serving all of Nassau and Suffolk County, with deep local roots near our North Babylon home base.
Get A Free EstimateWhat Long Island Says
Reviews From Homes & Businesses We've Served
5 out of 5 stars
Called Neil on the spur of the moment on a Saturday afternoon because my bathroom sink backed up and when I plunged it nothing but black water came up. I really opened up Pandora's box. Neil was able to come same day and fix the problem. Glad I had his number handy.
Patricia NollJune 2026
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
5 out of 5 stars
Most recently, Neil came to my house to look at an issue I was having with the plumbing of my pool heater. Despite being very busy, he squeezed my job in. This morning he came by early to give everything a test. No surprise, it works perfectly. Thank you Neil!!!
Edward AndersonMay 2026
Need Sewer Line Repair?
Free estimates with no obligation, 24/7 emergency response, and 22+ years serving homes and businesses across Nassau and Suffolk County.