When a pipe bursts or a drain backs up in Derry, the 24/7 line at (603) 815-9179 reaches a dispatcher who sends a licensed plumber from Londonderry. This page covers emergency plumbing in Derry, NH 03038 and the East Derry 03041 area, the problems callers describe most often, and what to do before we arrive.
A true emergency means water that cannot be stopped, sewage entering the house, or no hot water in cold weather. Other problems can usually take a same-day appointment when the schedule allows. Tell the dispatcher which case you have and we will say plainly which it is.
The Derry plumbing problems we get called about first
Callers from Derry tend to describe the symptom before they name the part. These are the four situations that account for most emergency calls from the town.
Backed-up drains and sewer lines
A tub that fills when the washer runs, or a floor drain that bubbles, points to the main drain. We clear it with a cable and a camera, and our drain cleaning page explains the tools.
Burst and leaking pipes
A split pipe behind a wall or under a floor can pour out gallons in an hour. Shut off the main valve and call, then read about burst pipe repair while you wait.
No hot water
A tank that leaks or a heater that stays cold is urgent in a New Hampshire winter. We diagnose first, and water heater repair is often possible the same day.
Emergency dispatch around the clock
The line is answered at night, on weekends and on holidays. A dispatcher asks where the water is going, then books the earliest slot we can honestly offer.
Is it the Derry water main or your own pipes?
Derry's Public Works water department states that it serves about 15,000 residents, institutions and businesses in town. That makes the town main the first thing to rule out when pressure drops or water runs cloudy.
Derry Public Works also lists a new water main installation on Old Derry Road for the 2026 construction season. Crews working near your street can change pressure or stir up sediment for a short time. Run a cold tap for a few minutes, and if the water stays cloudy or the pressure stays low, ask Public Works whether work is under way nearby.
| What you notice | More likely the street | More likely your house |
|---|---|---|
| Low pressure at every tap | Neighbors report the same thing | Only your home is affected |
| Cloudy water that clears in minutes | Main work or hydrant flushing nearby | Rare, unless one tap only |
| Wet spot in the yard or basement wall | Leak at the town meter side | Leak on your service line |
| Hot water only is weak or cold | Not a street issue | Water heater or mixing valve |
If the problem is only in your home, that is our call to make. Dial (603) 815-9179 and say which taps are affected.
Getting from Londonderry to Derry
Derry lies east of Londonderry, reached from the NH 102 and NH 28 corridors. Our plumbers start from the Londonderry base, so a Derry call does not begin in a distant dispatch yard. Drive time varies with traffic and weather, so we give you an honest window when we book instead of a fixed promise.
The 03038 ZIP code covers most of Derry, and 03041 covers the East Derry area. From our base we also reach the 03053 and 03087 ZIP codes in Londonderry and Windham, and the Hampstead calls we receive come to the same dispatcher. On busy nights we route trucks by ZIP code first and by job type second, which keeps Derry calls from waiting behind a long drive.
Services Derry homeowners ask for
After an emergency stops, the follow-up work is usually planned. A sewer line that backed up once should get a sewer camera inspection, and a main line full of roots may need sewer line cleaning.
If a pipe failed because it is old, ask about repiping before the next winter. We also serve neighboring Windham and Hudson on the same dispatch line.
Permits come up when a repair changes the plumbing layout. For a job in Londonderry, the town's Building and Zoning Enforcement office takes permit questions at 603-432-1100, extension 440. For a Derry address, ask the Derry building office.
In Derry, the plumbing rules come from the International Plumbing Code (IPC) in the State Building Code, enforced by the Derry building office.
Before we arrive in Derry: burst pipe or active leak
These four steps limit damage while the plumber is on the way.
Shut off the main valve
Turn the main water valve clockwise until it stops. It is usually where the line enters the basement or near the meter. If it will not turn, tell the dispatcher.
Kill power to wet areas
If water is near outlets, a panel or a water heater, switch off those breakers from a dry spot. Do not wade through standing water to reach the panel.
Clear the area
Lift rugs, boxes and electronics away from the water. Open drains in a flooded basement should stay clear, and children and pets should stay out.
Call the 24/7 line
Dial (603) 815-9179 and say what is leaking, where the main valve is, and whether you smell sewage. We tell you who we can send and when.
Questions we hear in Londonderry
Yes, at any hour. A dispatcher picks up the 24/7 line in the middle of the night, books a licensed plumber from the Londonderry base, and offers a same-day slot for anything that is not an active flood.
Yes. We cover the 03038 ZIP code, which takes in central Derry and the neighborhoods along the NH 102 and NH 28 corridors, and the 03041 ZIP code for the East Derry area.
Shut off the main water valve, switch off power to any wet area from a dry spot, and move belongings away. Then call (603) 815-9179 and describe where the water is coming from.
Ask a neighbor first. If several homes are affected, call Public Works. If only your home is affected, call us, because the cause is probably your service line, a valve or a fixture.
Yes. Hampstead calls go to the same dispatcher, and the plumber comes from the Londonderry base. Tell the dispatcher your street so we can plan the route.