Signs the line between meter and house is leaking
A service line leak hides under soil, so the evidence shows up elsewhere. Check these before you call.
- Close every tap and appliance, then watch the meter's small leak indicator or low-flow dial. If it moves, water is going somewhere.
- A strip of lawn between the meter and the house that stays wet, sinks, or grows greener than the grass around it.
- A warm patch on a slab floor or an unexplained damp spot near the wall where the line enters.
- A water bill that rose with no change in how many people live in the house or how much laundry you do.
- Hissing or running-water sound at the entry point when the house is quiet.
- Pressure that fell at every fixture at once, hot and cold both.
When a buried water line is running hard
Water pooling at the surface, a flooded meter box or a basement wall that is weeping where the line enters is an emergency. Water line repair calls are taken day and night, weekends included, and the sooner the supply is closed the less soil washes out from under your foundation or driveway.
Here is what you can do before the plumber arrives.
What to do while you wait
- Shut the main valve where the line enters the house, usually in a basement, utility room or crawlspace. Turn it clockwise until it stops.
- Open one faucet at the lowest level to relieve pressure, and leave the water heater alone until the supply is back.
- Keep people and pets away from any water flowing across a driveway, walk or toward the electrical service.
- Do not dig to chase the leak yourself. Buried gas and electric lines may be in the same path, and 811 has to mark them first.
- Photograph the wet area and the meter reading, then note the time, for your insurer or the utility.
Water service line leak: from the meter to the house
The service line is a single pipe, often three-quarter inch to one inch across, laid underground between the utility's meter and your home's main shutoff. It is under constant pressure, even when nobody is home. A pinhole, a failed fitting or a crushed section leaks all day and night, which is why the meter is the best clue.
Locating comes before repair. A plumber can isolate the line, pressurize it, and use acoustic listening gear to hear the leak through the soil, then mark the spot on the surface. A leak detection visit that narrows the search to a few feet means a small hole in the lawn instead of a long scar.
Once the leak is exposed, the choice is between cutting out the damaged piece and fitting a repair coupling, or replacing the line. The pipe material, its age along the whole run, and whether the line has failed before all weigh on that decision.
Repair a section or replace the whole service line
The right call depends on what the exposed pipe looks like and how often it has leaked.
| Situation | Usual option | Trade-off |
|---|---|---|
| One clean leak in an otherwise sound pipe. | Cut out the leak and join in a new section. | Small dig and little yard damage, but older pipe nearby may fail next. |
| Second or third leak on the same line. | Replace the full run from meter to house. | Higher up-front work, and it ends the cycle of repeat digging. |
| Pipe that is corroded or badly pitted where exposed. | Replace the line. | Patching weak pipe often just moves the leak a few feet along. |
| Line crossing a driveway, patio or walk. | Trenchless replacement if conditions suit, else open trench. | Less surface damage with trenchless, but it needs the right soil and a straight path. |
| Leak at the connection to the shutoff or meter. | Repair the fitting or valve. | Simple when the pipe is sound, though ownership of the meter side matters. |
If a plumber recommends replacing the entire line, ask to see the damaged section that was exposed.
Underground leaks that never reach the surface
Not every buried leak daylights. Water can drain into gravel or sandy soil and vanish, so the only signs are the meter, the bill and a drop in pressure. A leak that stays below ground can undermine a slab or a walkway for months before anything sinks.
That is why a spinning meter is worth a call even when the lawn looks dry. A plumber can run a pressure test on the line, and a burst pipe repair visit covers the other case, where a pipe inside the house has split. Telling the dispatcher which of those you suspect speeds the first visit.
Low water pressure that has nothing to do with the city
Low pressure has several causes, and a service line leak is only one. Start by finding out how wide it is. If just one faucet is weak, a clogged aerator or cartridge is the likely cause. If only hot water is weak, look at the water heater and its shutoffs. If every fixture is weak, the problem sits upstream, at the main valve, a pressure regulator, a corroded pipe section or the service line.
A pressure gauge screwed onto an outdoor hose bib shows the number. Household pressure often sits somewhere between 40 and 80 psi. A reading far below that, with the main valve fully open, deserves a plumber. A regulator that has worn out is a common find in homes where the original fixtures are aging, and it is a fast fix.
Pressure that drops after years of gradual decline often points to pipes narrowed by mineral scale or corrosion inside the house. In that case repiping the affected lines may be the lasting answer, and the plumber can show you where the restriction is.
Meter-box and yard leaks near the street
A meter box that is full of water or a wet patch near it is one of the more confusing leaks. The meter and the pipe on the street side usually belong to the supplier, and the pipe from the meter to your house usually belongs to you. Photograph the box before you touch anything and call the water supplier if the leak is on its side.
Who to call about the street side, and what the supplier lists
In Middletown, the Water Department at 431 Haveg Road, phone 302-378-2211, runs the water distribution system. Ask where the town's responsibility ends at your address. If the leak is before that point, the repair belongs to the town, not to you.
In Townsend, the town's resident information page lists Artesian Water for water service, with an emergency number of (302) 453-6922 or (800) 332-5114. Our plumbers serving Townsend can work on the private side once the supplier has handled the street connection.
For any water main break you can see flowing in the street, the town says to dial 911 in an emergency.
Lead service lines, flushing and the water in your pipes
The town keeps a lead service line inventory, and you can ask about your address at 302-378-2211. The town's report says lead in drinking water comes mainly from service lines and home plumbing, and that the town cannot control what materials are used inside homes. A service line replacement is a good moment to ask what pipe is being removed.
The report also advises flushing a tap for 30 seconds to 2 minutes after water has sat for several hours before you drink or cook with it. The town's general system gets its water from groundwater wells between 374 and 838 feet deep and also buys water from Artesian Water Company. The report lists no hardness figure, so test your tap or ask the Water Department if hardness matters for your appliances.
How the repair gets done once the leak is found
Digging is a coordinated job, not a shovel and a hunch.
- Call 811 firstMiss Utility needs at least 48 hours before any digging so buried lines get marked.
- Expose the pipeThe plumber opens a small trench at the located spot and checks the pipe for damage beyond the leak.
- Repair or replaceA sound pipe gets a section cut out and replaced. A failing pipe is replaced from the shutoff toward the meter.
- Pressure test and restoreThe line is tested before backfill, then the trench is closed and the surface restored as agreed.
What changes the price of water line repair
A leak found with listening gear and a full line replacement across a driveway are not the same job. These factors set the range.
Length and depth of the line
More pipe and a deeper trench mean more labor, material and restoration.
Location of the leak
A leak in open lawn is easier to reach than one under a driveway, patio, tree roots or a slab.
Repair or replacement
Cutting in a short section costs less than laying a new run from the meter to the shutoff.
Trench or trenchless method
Trenchless can reduce surface damage but depends on soil, path and equipment access.
Pipe material and fittings
The pipe type, connection to the meter side and any new shutoff valve add to the parts list.
Many homeowner policies cover sudden and accidental damage from a leak but not the cost of the buried line itself in every case, and wear or age is often treated differently, so read your policy or ask your insurer before work starts.
Call (410) 378-7601 to get a clear price before work starts, after the leak has been located.
Water Line Repair: Common Questions
Do you handle water line repair emergencies at night or on weekends in Middletown?
Yes. A leaking water line gets the same 24/7 emergency line as any other plumbing crisis, and same-day appointments are available when schedules allow.
Shut off the main valve first. Then call with the meter reading and anything you see on the surface.
How do I know if my water bill jump is from a buried leak?
Shut off every tap and appliance, then check whether the meter's leak indicator moves. If it does and the house has no running fixtures, water is escaping somewhere between the meter and the fixtures.
A plumber can then separate an interior leak from a service line leak by closing the main valve and watching the meter again.
Who is responsible for the water line, me or the town?
It depends on where the leak is. The pipe from the meter to your house is generally the owner's, and the supplier handles its own side.
Call the Middletown Water Department at 302-378-2211, or Artesian Water for Townsend, and ask where responsibility ends at your address.
Is trenchless water line replacement always possible?
No. It works where the soil, the path and the access points allow a new pipe to be pulled through the old route.
Trenching is still the better option when the old line has collapsed, takes sharp turns, or must be inspected along its whole length.
What does water main replacement involve?
The water main is the supplier's pipe in the street, so replacing it is the utility's work, not a homeowner project.
What a homeowner controls is the service line off the main. If a main project is planned near you, ask the supplier whether your service connection will be touched.
Can I fix a leaking water line myself?
Small compression repairs on exposed pipe are possible, but a buried line is a different matter. Digging risks gas and electric lines, and a wrong fitting can fail under pressure.
Call 811 before any digging, and use a licensed plumber for work on the line itself.
Why is my pressure low at every faucet?
Start with the main valve, which may be partly closed. A failed pressure regulator, a leak on the service line or narrowed pipes inside the house are the next suspects.
A gauge on an outdoor hose bib gives the plumber a number to work with.
If your meter is turning with every tap off, call (410) 378-7601 and tell us what the yard and the bill are showing.
Standards and sources
Replacing a service line is governed in Delaware by 16 Del. Admin. Code 4455, which adopts the 2021 IPC. The town keeps a lead service line inventory and its water quality report says lead comes mainly from service lines and home plumbing. Call 811 before digging.