A split supply line keeps delivering water until someone closes a valve
.A burst pipe is a failure in the pressurized supply side of your plumbing, the lines that carry water to taps, showers, the water heater and appliances. Unlike a drain leak, a supply line is under pressure all day, so a split keeps pushing water into a wall or floor cavity for as long as the valve stays open. So the first job is the valve.
This page covers the pipe failure and its damage. Pumping standing water is explained on emergency water removal. Freeze causes are on frozen pipe water damage, and a leaking tank is covered under water heater leak cleanup.
Why supply lines fail in Bothell homes
.Freezing is the cause people expect, but it is only one of several. Corroded lines, aging fittings, a screw driven into a pipe during a remodel and pressure too high for old connectors all end the same way.
Northshore Utility District says the homeowner is responsible for all repairs on private property, from the meter to the building. The district handles leaks between the meter and the right-of-way. A split inside your walls is therefore yours to repair, and a plumber is the right call.
What you see and what it usually means
.| What you notice | What it usually means |
|---|---|
| Running water sound with every fixture off. | A supply line is open, often inside a wall. |
| Meter dial moving with all water use stopped. | Water is leaving the plumbing, perhaps slowly. |
| Brown stain or bubbling paint that grows. | A cavity has filled and drywall is wicking water outward. |
| Low pressure at several taps at once. | A large leak is pulling pressure down. |
Northshore Utility District suggests a meter test. Note the reading, wait one or two hours without using water, and read it again. If the number changed, you likely have a leak.
Burst pipe safety: the first hour
.Close the main shut-off
Northshore Utility District says the main valve is usually in a garage or basement. Turn it fully.
Open the lowest tap
With the main closed, open a tap on the lowest floor to drain the lines. Before running many hot taps, switch the water heater off at its breaker or gas control.
Keep away from wet electrical
Do not touch outlets, switches or the panel while standing in water. If water is coming through a ceiling light fixture, leave that room and call your electric utility.
Call the right helpers
A plumber repairs the pipe. If the problem may be on the street side of the meter, Northshore Utility District keeps a 24-hour line for water emergencies.
Photograph, then call us
Photograph the source, the wet surfaces and damaged belongings, then call our dispatch line.
Pipe split and water still spreading?
Call the 24/7 line. A person answers and walks you through the shut-off.
What the water did while you were finding the valve
.Water from a supply line starts out clean, which is the easiest kind to dry. It does not stay that simple if it sits in carpet pad and insulation. Drywall draws water upward from the floor, insulation holds it against framing, and a laminate floor swells at the seams.
A pipe that fails inside a wall can wet a long stretch of that wall before a stain shows, so the visible damage is often smaller than the wet area.
Confirm the source is closed
Drying a room with an active leak is wasted effort.
Remove standing water
Pumps and extraction wands pull water from floors and carpet.
Map the moisture
Moisture meters and a thermal camera show which studs, subfloor sections and ceilings hold water, including areas that look dry.
Open what must open
Wet drywall and insulation are cut out along the pipe's path, and baseboards come off.
Dry and verify
Air movers and LGR dehumidifiers dry the room. Readings are logged each visit until framing and subfloor reach dry targets.
Dry targets follow the published ANSI/IICRC S500 water damage standard, cited here as a reference and not as a certification. The rebuild after drying is described on water damage repair.
What affects the cost of burst pipe water damage
We explain scope and price before work starts.
How long the pipe ran
A pipe caught in minutes wets one room. One that ran overnight can reach a floor below.
What the water touched
Carpet, hardwood, drywall and insulation each need different treatment.
Access to the cavity
A pipe behind tile or in a finished ceiling takes more work to open.
Drying time
Equipment days depend on materials and how fast readings fall.
Pipe repair is a plumber's job and a separate cost.
Burst pipes and your insurance
.The Washington Office of the Insurance Commissioner says home policies usually cover burst pipes, including frozen pipes, as long as you heat your home properly. It also says insurance will not cover water damage if you delay repairs.
A slow weep from a fitting that runs for weeks is treated differently from a sudden split. Ask your insurer how it handles the pipe repair and the resulting damage. We document the loss and never promise what a policy will pay.
Mistakes to avoid after a pipe lets go
.- Leaving the main on while you look for the plumber's number.
- Plugging in a wet-dry vacuum near the water.
- Painting over a ceiling stain, which traps moisture.
We dispatch from the same line to Kenmore and Woodinville. If the water reached a lower level, water mitigation covers the drying that follows.
Common questions about burst pipe water damage
Yes. The dispatch line is answered 24 hours a day, including nights, weekends and holidays. We offer same-day response when available and do not promise an arrival time. Close the main shut-off while you wait.
Northshore Utility District says it is usually found in a garage or basement. Look where the water line enters the building, often near the water heater or the front wall. Find it before an emergency and make sure everyone in the household knows.
No. A plumber repairs or replaces the pipe. We handle the water damage: extraction, drying, removal of wet materials and the written scope for the rebuild.
Northshore Utility District says the homeowner is responsible for private-property repairs from the meter to the building, and the district handles leaks between the meter and the right-of-way. If you cannot tell, call the district's 24-hour water emergency line.
The Washington insurance commissioner says policies usually cover burst pipes, including frozen pipes, if you heat your home properly and report promptly. Gradual leaks are treated differently. Check your policy and ask your insurer.