When a water line leak is an emergency
Water bubbling up in the yard, a sudden drop in pressure or a meter that spins with every fixture off all suggest a break in the buried line. Water at pressure can wash out soil, undermine pavers and run to a low spot near the house.
Close the main shutoff at the house. If the leak continues, the break is on the meter side of that valve, and the city's curb stop is the next point to close. Call (714) 750-8637 and the 24/7 line will guide you.
What the service line is
The service line starts at the water meter, which the city or water utility maintains, and runs underground to your home's main shutoff. In general the property owner is responsible for the section on the house side of the meter. Ask the City of Fountain Valley if you are unsure where the line of responsibility sits at your address.
Lines are commonly copper, galvanized steel or plastic, depending on when the house was built. Each fails in a different way and the repair depends on which one you have.
Signs of a failing water line
The buried line is out of sight, so these are the clues.
Wet or sunken patch
Water coming up in a yard or a depression in soil or pavers over the line.
Low or fluctuating pressure
A leak between the meter and the house lowers pressure at every fixture.
Rusty or discolored water
Corroded galvanized line sheds rust into the water.
Unexplained bill increase
A steady leak shows as a higher usage reading with no change in habits.
Repair or replace?
The count of leaks and the pipe material decide most cases.
| Situation | Likely approach | Reason |
|---|---|---|
| One leak in sound copper | Spot repair | Limited dig, new section joined |
| Several leaks in the same run | Replace the line | More failures are likely nearby |
| Galvanized steel line | Replace | Rust throughout, flow is also restricted |
| Long run under concrete | Consider trenchless methods | Less surface restoration |
Wet spot in the yard?
Call the 24/7 line before the soil gives way.
Finding the break
The plumber starts with a meter test and a pressure check on the line. A line tracer marks the route, and acoustic equipment listens for the leak. Digging begins only once the location is clear, which keeps the trench short.
If the leak is under a driveway or a patio, the plumber discusses trenchless replacement or rerouting around the hardscape. Leak detection is the first step if the break is not obvious.
Low water pressure and the service line
Pressure that drops over months, with no change in the street, can point to a narrowed or leaking service line. A galvanized line may be mostly rust inside. Pressure that is too high is also an issue, because it stresses the line and fixtures.
The plumber can measure pressure at a hose bib to see where you stand. A pressure regulator is common in California homes, and it may be due for replacement if the numbers look wrong.
What water line repair costs
Costs depend on length, depth and surface. You hear a clear price before the work begins.
What moves the final number
Surface restoration such as landscaping or concrete is often separate from the plumbing work. Ask what is included. Call (714) 750-8637.
Pressure limits and permits
The Uniform Plumbing Code (UPC), which the California Plumbing Code is built on, calls for a pressure regulator where pressure could exceed 80 psi. A new service line is usually permitted work with an inspection before the trench is closed, so ask the Building Division what applies.
Permits and the city
The City of Fountain Valley Building Division at 714-593-4429 can tell you whether your repair needs a permit. Work in the public right of way, such as at the curb, is handled differently from work on private property.
The plumber will mention what applies and how scheduling for inspection works.
Common Questions
Yes. Call (714) 750-8637 at any hour. Close the main shutoff first and tell the dispatcher whether water is still flowing.
A wet spot between the meter and house, a meter that runs with the main closed or a drop in pressure at every fixture all point there.
Generally the utility owns up to the meter and the homeowner owns the line beyond it. Confirm with the City of Fountain Valley.
Sometimes. Trenchless methods pull a new pipe through the old path. The plumber tells you if your layout allows it.
Often yes for replacement. Ask the Building Division at 714-593-4429 about your address.
It can be. Galvanized steel corrodes from the inside and restricts flow. Replacement is often a better value than repeated repairs.