Emergency Plumber in Londonderry, NH
Call the 24/7 line when a pipe bursts, a drain backs up or the hot water quits. A licensed emergency plumber is dispatched to Londonderry and nearby towns.
Plumbing services we run in Londonderry
Each service page covers the signs, the method, what affects the price and what to do while you wait.
Drain Cleaning
Cables, augers and cameras clear kitchen, bath and main-line clogs, day or night.
Water Heater Repair
Diagnosis and repair for tank and tankless units with no hot water, leaks or odd noises.
Water Heater Replacement
Replacement when a tank has failed or repairs no longer make sense, including same-day swaps.
Water Heater Installation
Planned installs of tank, tankless and hybrid heaters, with venting and expansion tanks done right.
Tankless Water Heater
Tankless installation, repair, flushing and descaling for homes that want endless hot water.
Hydro Jetting
High-pressure water scours grease, scale and roots from lines that cables cannot fully clear.
Leak Detection
Find hidden leaks behind walls, under floors and underground without tearing things open first.
Burst Pipe Repair
Fast shutoff, repair and cleanup guidance when a pipe splits, freezes or fails.
Sewer Line Repair
Spot repairs, trenchless lining and replacement for cracked, rooted or collapsed sewer lines.
Sewer Inspection
A camera shows the real condition of your sewer line before you buy, dig or repair.
Sewer Line Cleaning
Main sewer lines cleared of roots, grease and debris with larger cables and jetting.
Water Service Line Repair
Repair or replace the pipe that brings water from the street or well to your house.
Toilet Repair and Installation
Running, leaking, clogged or rocking toilets fixed, plus new toilet installation.
Faucet Repair
Dripping faucets, failed shutoff valves and leaking shower and tub valves repaired.
Garbage Disposal Repair
Jammed, leaking or dead disposals repaired or replaced and connected correctly.
Repiping
Replace failing galvanized, corroded or leaking supply lines in part of the house or all of it.
Plumbing Installation
New fixtures, remodels and new-construction plumbing installed to code by licensed plumbers.
Commercial Plumbing
After-hours and scheduled plumbing for shops, offices, restaurants and multi-unit buildings.
What counts as a plumbing emergency
An emergency plumber is the right call when water is moving where it should not, or when a fixture has stopped working in a way that harms the house. Waiting makes most of these problems more expensive. Our 24/7 line is answered at night, on weekends and on holidays.
- A pipe has burst or a ceiling is dripping, and you cannot stop the water.
- Sewage or drain water is coming up through a tub, shower or floor drain.
- A water heater is leaking from the tank or the relief valve will not stop running.
- The water meter keeps spinning after every fixture is off.
- There is no hot water and the house is cold enough to risk frozen pipes.
While you wait for the plumber, shut off the main water valve, turn off power to wet areas if you can do it safely, and move belongings away from the water. If you smell gas, leave the building and call 911 or the gas utility before you call us.
Where we work in Londonderry
We are based at 75 Gilcreast Road and dispatch across the whole town. That includes the villages of North Londonderry and Wilson, the homes along NH 128 (Mammoth Road), and the neighborhoods near I-93 Exits 4 and 5. Knowing the roads matters in a winter emergency, because a plumber who knows the route arrives sooner.
Commercial calls come from the Manchester-Boston Regional Airport side of town, where half of the airport including its main terminal sits in Londonderry's northwest corner. Our commercial plumbing team handles after-hours leaks and drain backups for shops, offices and restaurants. Large employers such as Stonyfield Farm and newer developments like Woodmont Commons, a 600-acre mixed-use project, mean a steady mix of new and older plumbing in one town.
New plumbing in a newer building and older piping in an established house fail in different ways. We match the repair to what is actually in the wall. The plumbing installation page covers new fixtures and remodels, and repiping covers failing supply lines in older homes.
How a service call runs
The same four steps apply to every job, from a clogged drain to a burst pipe.
Call the 24/7 line
A dispatcher takes the address and symptoms and asks what to shut off while you wait.
Appointment set
A licensed plumber is scheduled, with same-day appointments when available.
Diagnosis and price
The plumber confirms the cause and gives you a clear price before work starts.
Repair and walkthrough
The repair is finished and explained, and you know what to watch for after.
Private wells and town water in Londonderry
Many Londonderry homes get their water from private wells. PFAS contamination tied to the former Saint-Gobain plant in nearby Merrimack affected wells in this area, and as of January 2026 the town was developing a plan to extend public water through special assessment districts. The state environmental agency, NHDES, runs programs to help well owners outside the Saint-Gobain boundary test and treat their water.
For plumbing, that matters in two ways. A well home has a pressure tank and pump that can cause low pressure or short cycling, and a home on a new town water connection needs its service line and shutoff checked. Our water service line repair page explains both situations. If you rely on a well, test your water and ask NHDES which programs apply to your address.
We cannot tell you the hardness of your water without a test. Ask your water utility for its annual water quality report, or test your tap, before you choose a softener or filter.
What plumbing repairs cost
You get a clear price before work starts. The final number depends on the factors below, which is why a phone quote is only a starting point.
| Factor | How it changes the price |
|---|---|
| Access to the pipe or fixture | Open basements are quick, finished walls and slabs take longer. |
| Size and material of the line | A 4 inch cast iron main needs larger tools than a 3/4 inch copper supply. |
| Parts and equipment needed | A tank heater costs differently from a tankless unit or a camera inspection. |
| Time of the call | Nights, weekends and holidays carry after-hours labor. |
| Repair or replace | A worn fixture may be cheaper to replace than to keep repairing. |
Homeowners insurance often covers sudden water damage but not the cost of fixing the pipe itself. Check your policy, and call (603) 815-9179 to describe your problem.
How to check a plumber's license in New Hampshire
New Hampshire licenses master and journeyman plumbers through the Board for the Licensing and Regulation of Plumbers, created by RSA 329-A. Ask any plumber for a license before work begins, and confirm it with the board at 603-271-3267 or at 21 South Fruit Street, Suite 24, Concord.
Permits depend on the job, and the town's Building and Zoning Enforcement office (603-432-1100, extension 440) is where to check before a water heater swap or a new line. The office is at 268B Mammoth Road, and the town lists plumbing permits on its online portal and as a paper form.
Our work follows the International Plumbing Code (IPC) as New Hampshire adopts it through the State Building Code, and the town building office enforces it.
Questions before you call
Yes. Call (603) 815-9179 at any hour. Give the dispatcher the address and what is happening, and you will be told what to shut off while a licensed plumber is scheduled.
Shut off the main water valve if water is escaping, stop using drains if sewage is backing up, and turn off power to wet areas only if you can reach the panel safely.
If you smell gas, leave the building first and call 911 or the gas utility.
Yes. We dispatch to Derry, Windham, Hudson, Manchester and Litchfield, as well as every part of Londonderry.
Yes. The plumber diagnoses the problem and gives you a clear price before work starts, and you decide whether to go ahead.
Not without a test. Test your tap, or ask your water utility for its water quality report. Wells need their own testing.
Our plumbers are licensed and insured. You can ask to see a license on any job and confirm it with the New Hampshire plumbers board at 603-271-3267.
Emergency plumbing in Londonderry and nearby towns
Our service area covers ZIP codes 03053 in Londonderry, 03038 in Derry, 03087 in Windham, 03051 in Hudson, 03052 in Litchfield, and 03103 and 03109 on the south side of Manchester. We pair local knowledge with the same 24/7 line, so a call from any of those ZIP codes reaches the same dispatcher.
Pick your town below for local details, or visit the service area page for the full list. For problems that need planning rather than speed, the plumbing services page shows every service we run.
Plumbing problem right now? Call the 24/7 line.
A dispatcher answers day and night, and a licensed plumber is sent to Londonderry and nearby towns.