Our phone line is open 24/7 for active leaks. While you wait, find the main shutoff for the house and turn it clockwise until it stops, then open one faucet to relieve pressure.
Leak detection means locating a leak without tearing open half the house. We trace the problem first, then explain the repair, whether that is a ceiling stain, a soggy patch of lawn or a water bill that suddenly doubled.
Emergency leak signs: what to do right now
Water running through a ceiling, pooling on a floor or spraying inside a wall is an emergency. Stop the supply first. Cleaning up comes second.
If the water is near outlets, light fixtures or a ceiling that sags, stay out of the room and switch off power to that area at the panel only if you can reach the panel dry. A bulging ceiling can drop without warning, so do not stand under it.
Do this while you wait
- Turn the main shutoff valve clockwise
- Open the lowest faucet to drain pressure
- Move rugs, boxes and electronics away
- Switch off power near wet areas if it is safe
- Take photos of the damage for your records
- Keep people and pets out of sagging rooms
Run a meter test before you pay for anything
A water meter test costs nothing and tells you whether water is leaking at all. It also helps narrow the search to the house or to the line outside.
Do it when nobody is home or everyone is asleep. Shut off every tap, the dishwasher, the washer and the ice maker, and make sure the toilets are not refilling.
- 1
Stop all water use
Close every faucet and pause appliances that draw water, including irrigation timers.
- 2
Read the meter
Lift the meter box lid and write down the register numbers or note the position of the small leak indicator.
- 3
Wait at least 15 minutes
Keep everything off and do not flush. Water use has to stay at zero. For a slow leak, wait longer and watch the leak indicator.
- 4
Read it again
If the numbers moved or the indicator spins, water is escaping somewhere on your side of the meter.
If the meter stays still but your bill is high, look at irrigation schedules and a toilet that runs quietly. The City of Westminster Water Division billing office at (714) 894-3796 can answer questions about the meter reading itself.
Need leak detection in Westminster? Our phone line is open 24/7.
Call (714) 750-8637Where hidden leaks show up in a 1971 Westminster home
The median home in Westminster was built around 1971, and most neighborhoods were laid out during the 1960s growth boom. That means original copper, older solder joints and supply lines buried in slabs or tucked in attics are now over fifty years old.
Pinholes and slow joint seeps are common at that age, so a small stain deserves attention before it becomes drywall rot. We match the symptom to the likely location first.
| What you notice | Likely source | First check |
|---|---|---|
| Warm spot on the floor | Hot line under the slab | Acoustic and thermal scan |
| Ceiling stain that grows | Attic supply or drain joint | Moisture meter, then access |
| Musty wall, peeling paint | Pinhole in a wall supply | Thermal camera and pressure test |
| Meter runs with all fixtures off | Any pressurized line | Isolate house from service line |
| Soft, green patch of lawn | Line between meter and house | Pressure test the service line |
Slab, wall and ceiling leaks: how we pinpoint them
If your home sits on a concrete slab, a leaking hot or cold line can run under the floor for months. Signs include a floor that feels warm underfoot, the sound of running water at night and a bill that climbs for no reason. Once located, repairs are covered on our slab leak repair page.
We start by pressure testing the lines to confirm a leak exists. Then we listen with acoustic gear, scan with thermal imaging and mark the spot, so any opening in a wall, floor or ceiling stays as small as possible.
Westminster water averages 252 mg/L hardness, roughly 14.7 grains per gallon.Scale also builds up in shutoff valves, which can stop them from closing fully, so test yours.
Same-day appointments are offered when available. Call to ask about leak detection.
Call (714) 750-8637The line from the meter to the house
A wet strip in the yard, a drop in pressure or a meter that spins with the house shut off often points to the service line. That is the underground pipe running from the meter to the house, and a leak there can go unseen for a long time. Repair options are on the water line repair page.
The meter is often where city and property responsibility meet, but it varies. Call the City Water Division at (714) 894-3796 to confirm where yours sits before digging, since city water main breaks are handled separately.
Irrigation, pool and meter box leaks
Sprinkler valves and drip lines are a frequent source of unexplained bills. A stuck valve can run for hours, and a cracked riser leaks a little every cycle. If your meter box lid is always full of water, the leak may be at the meter connection, which belongs to the city side.
Pools and spas lose some water to evaporation. Wet soil near the equipment pad points to a plumbing leak we can test.
Leaks in shops, restaurants and rentals
A leak at a business along Bolsa Avenue or in a strip mall has an extra complication: shared walls and ceilings. Tenants and landlords may split responsibility, so document what you see and call your property manager as well as us. Our commercial plumbing page covers after-hours calls and shutoff access.
If you rent, shut off the water, report the leak in writing and keep photos.
What drives the cost of finding a leak
Typical leak detection often runs from a couple hundred dollars for a simple isolation test to higher figures when a slab or multiple walls are involved. Your price depends on the job, and we give you a clear price before work starts.
Cost depends on how many lines must be tested, how hard the leak is to hear and how much access we need. Repairing the leak is billed separately from locating it.
The City Water Division, (714) 894-3796, handles main breaks and leaks. According to the City of Westminster's 2024 Water Quality Report, local water averages about 252 mg/L hardness. Repairs on your side follow the California Plumbing Code (Title 24, Part 5).
Leak detection questions from Westminster homeowners
Do you handle leak detection emergencies at night or on weekends in Westminster?
Yes. The phone line is answered 24/7, including nights, weekends and holidays. Call, describe where the water is, and shut off the main valve while you wait.
How do I know if I have a hidden leak?
A rising water bill, a meter that moves when everything is off, damp spots, musty smells and the sound of running water are the usual signs. A meter test is the quickest first step.
Can you find a leak without breaking up my floor?
Usually we can narrow it down with listening gear and thermal scanning, so any opening is small and targeted. Some leaks still need access, but we mark the exact spot first.
Is a slab leak the same as a burst pipe?
Not exactly. A slab leak is a leak in a line under or inside the concrete floor, often slow. A burst pipe is a sudden break that releases a lot of water quickly.
Who is responsible for a leak between the meter and my house?
The meter is often the dividing point, and the line on the house side is typically the owner's concern, though it can vary. Confirm with the City Water Division at (714) 894-3796.
Will my high water bill be reduced if I find a leak?
That depends on the city's billing policies, which we cannot speak for. Ask the Water Division about any adjustment and keep your repair records.