Open 24/7 · Corona, CA

Leak Detection in Corona, CA

A hidden leak in Corona shows up as a higher bill, a moving meter or a damp wall. Find out whether it is on your side of the meter, then call for a search that points to the exact spot.

Emergency? Call now, 24/7(951) 451-5200

Run the meter testEverything off, then read the dial.
Call and describe itBill, damp spots, what the meter did.
Same-day service is availableThe leak is located before anything is opened.

What we help with

Related help for Corona homes

Hidden leaks often connect to one of these. Each has its own page.

Slab leak repair

A hot or cold line leaking under the floor of a slab home.

Slab leak repair details →

Water line repair

A break in the line that runs from the meter to the house.

Water line repair details →

Low water pressure

The other half of the pressure problem, and a regulator clue.

Low water pressure details →

Burst pipe repair

When a slow leak turns into water pouring out.

Burst pipe repair details →

Start here

Signs you need leak detection in Corona

Match the sign. Red cards mean shut the water off first.

Your water bill climbed and nobody changed their habitsA steady rise with the same number of showers and loads of laundry often means water is escaping somewhere you cannot see.Meter check The meter dial keeps turning with every fixture offThat is the clearest sign of a leak on your side of the meter. It does not say where the leak is.Run the test Water is surfacing in the yard or along the drivewaySoggy ground in dry weather can mean a line break between the meter and the house. Shut the house valve if the ground is still filling.Yard signs A warm patch on the floor, or a hot water line that runs hot with nothing onA leaking hot line under a floor can warm the surface above it.Warm floor Hissing or a faint running sound when the house is quietA pinhole in a pressurized line can be heard at night when the rest of the house is silent.Listening test Hammering pipes or fixtures that spit and dripPressure that is too high after the meter strains every joint and valve in the house. Corona leaves the regulator to the homeowner.Pressure first Stains, bubbling paint or a musty smell on a wallMoisture inside a wall moves along the framing, so the stain is rarely right above the leak.Wall moisture Low pressure at one tap onlyThat points at the fixture or a partly closed valve, not a hidden leak. Check before paying to open anything.Rule it out

Why call us

Why call for a leak search in Corona

Leak work is wasted if it starts in the wrong place. This is how the call is set up.

The line is open 24/7A running meter or an active drip does not wait for business hours.
Same-day service is availableA leak found today costs less water than one found next week.
One number for the whole jobThe search, the repair and any related fixture work are all plumbing, and all on the same call.
Talk it through firstDescribe the meter test and the damp spots, and the call sorts what to check next.
Corona is coveredCalls from the city are taken on the same number as everything else.

We vs others

What a good leak search looks like

Six differences you can use when comparing options.

	UsLake Elsinore Plumbing Pros	vsMany other plumbing companies
Hours	Open 24/7A leak that is getting worse is not a nine-to-five problem.	Often weekday appointments only
Reaching someone	One phone call, no formsYou can read the meter dial to the person on the line.	Often an online request form
How soon	Same-day service is availableAsk what is possible for your address.	Often the next open slot
Scope	Search and repair on one numberNo second company to find once the leak is located.	Some only locate, then refer you on
Local knowledge	Corona’s city-run water systemMeter, regulator and house valve are treated as separate points.	Often a generic checklist
Price clarity	This page explains what moves the priceAsk about pricing when you call.	Often silent until after the visit

Based on what is typical. Individual companies vary.

How it works

How leak detection in Corona works, from call to repair

Four steps, from the first description to a confirmed repair.

You describe the signs
The bill change, the meter, the damp spot. Any detail helps decide where to start.
The scope is narrowed
The meter and pressure checks decide whether the leak is outside, inside or at a fixture.
The leak is pinpointed
Listening gear, imaging or tracer gas narrow it to a small spot.
The repair is explained
You hear the options and what opening up would involve before any cutting begins.

Pricing

What decides the price of a leak search

Searches vary a lot in effort. These are the factors that move the number.

How well the leak is isolated

A leak already narrowed by a meter test takes less time than a whole-house hunt.

The type of line

Hot, cold, buried, under a slab or inside a wall each need different gear.

Access to the area

Finished floors, landscaping and tight crawlspaces add work to reach and restore.

Methods needed

A silent leak may need two methods to confirm, while a noisy one is found quickly.

Repair on the same visit

Searching and fixing are separate jobs. Ask whether both are planned.

Have this ready for the call

Your last two or three water bills, or the meter reading you took
Whether the meter moves with everything turned off
Where you saw damp, stains or a warm spot
Whether the house has a softener or a pressure regulator you know of

Ask about pricing when you call.

Call now, 24/7(951) 451-5200

Start at the meter

Prove the leak exists before anyone cuts a wall

The meter test, step by step

Good leak detection in Corona starts with a few minutes at the meter, before anyone listens at a wall, because it shows whether a leak exists at all. The meter box is usually near the curb or the front of the lot. Treat the meter itself as the utility’s equipment: look at it, do not wrench on it.

The test only works if the house is truly idle. That means no one showering, the dishwasher and washer finished, the ice maker unplugged or accepted as a small error, and the irrigation controller paused. Many meters have a small triangle or wheel that spins at even a thin trickle. If it turns with the house idle, close the valve where the line enters the house and look again. If the dial stops, the leak is inside the house. If it keeps turning, the leak is on the buried line between the meter and the house. That single split saves a great deal of searching.

Four steps at the meter

Stop all use
Pause irrigation, finish the laundry, and check that no toilet is still refilling.
Read the dial
Photograph the meter, including the small leak indicator if it has one.
Wait and compare
Leave everything off for a while, then read it again and compare the two photos.
Close the house valve
Then read it once more. A moving dial after that points at the yard line.

If you cannot find the dial, call and describe the box.

Where leaks hide

The usual places, and the sign that points to each

Most households start by looking where water shows up, but water is a poor witness. It runs along joists, pools in insulation and appears three feet from where it escaped. Leak detection in Corona works best from the system outward: first prove a leak exists, then prove which section holds it, then narrow that section down to a few feet. Only then does anything get opened up. The table below lists the places leaks tend to live and the sign that usually points to each.

Leaks cluster in a handful of places. The test points at the right one first.
Where the water is going	How it usually shows	What the search involves
Buried line, meter to house	Dial moves with the house valve closed; wet or unusually green ground; sound at the meter	Isolate the line, then locate it with listening gear or a gas tracer
Supply pipe inside a wall	Stain or bubbling paint, a damp smell, hissing at night	Moisture mapping and thermal imaging before any wall is opened
Pipe under or inside a slab floor	A warm patch, a floor that feels damp, a meter that runs with the house quiet	Pressure test each hot and cold branch, then pinpoint with listening gear. See slab leak repair
Toilet or tub overflow tube	Slow rise on the meter, no visible water	Dye in the tank; check the fill valve and flapper. See toilet repair
Water heater or its relief pipe	Wet floor around the heater, a damp relief line, rust at the base	Look at the connections and the relief valve before assuming the pipes
Irrigation line after the house	Yard patches, low sprinkler heads, a bill that jumps in summer	Shut the irrigation branch alone and watch the dial

Pressure

Check the regulator before you blame the pipes

The regulator is yours: check pressure before blaming the pipes

Corona Utilities states on its customer Answer Center that if flow is poor at a hose bib and again at the shut-off near the meter box, the pressure regulator is the customer’s responsibility to replace if needed. It also suggests putting any water softener in bypass while you test. That is useful for leak work because a regulator that has stopped doing its job does the opposite of low flow: it lets pressure through unchecked.

Pressure that runs high is hard on supply lines, shut-off valves, water heater connections and the small rubber seals inside faucets. Leaks that keep returning at different spots around the house are a typical pattern. A plumber can put a gauge on a hose bib and read the pressure in seconds. If it is high, replacing the regulator is a small job next to chasing a leak every few months. See our page on low water pressure for the other direction of the same problem.

Reading the pressure

Typical readings and what they point to.
Gauge or symptom	What it suggests	Next move
High reading at a hose bib; banging when a valve closes	Regulator drifting open or missing	Test, then replace the regulator
Normal reading, but a drop when one fixture opens	Restriction in that branch	Check the stop valve and the aerator
Weak flow at the hose bib and at the meter-side shutoff	Regulator stuck closed, or a closed valve	Put the softener in bypass, retest, then the regulator
Pressure normal; meter still runs	A true leak	Isolate and search

Read pressure before you open a wall.

Corona’s water

Mixed, hard supply and what it does around the house

What mixed, hard supply does to household leak points

The city blends several sources through five blending facilities and six pressure zones, and says its average hardness is 146 ppm, which it classes as hard. The Answer Center puts it as ranging from hard to very hard. Hardness differs by street and by season, so your own number may not match the average. For your area’s figure, ask Corona Utilities.

What matters for leaks is practical. Mineral scale builds up inside shut-off valves, on faucet cartridges and around the threads of water heater connections. A valve that has not been turned in years can seize, and one that is forced can start dripping from the stem. Scale at a fitting does not drill a hole in a pipe, so it should not be blamed for hidden pinholes, but it does explain a lot of the slow drips under sinks and at the heater that people mistake for plumbing failures elsewhere. For the wider picture, see our guide to hard water in Southern California homes.

Where Corona’s water comes from, and how hard each source is

Figures from Corona’s Consumer Confidence Report covering 2025. Most pumped groundwater goes through the Temescal Desalter before it is delivered, so the numbers above describe the sources, not what any one tap receives.
Source in the city’s 2025 report	Share of supply	Average hardness, mg/L	About grains per gallon
State Water Project	4.9%	88	5.1
Colorado River water via Lake Mathews	49.6%	288	16.8
City-owned groundwater wells	45.5%	452	26.4
System-wide average, as the city reports it	Blended	146	8.5 (classed hard)

Tools

How the leak actually gets found

Equipment for leak detection in Corona is only as useful as the order it is used in. The first test always asks the simple question: does water leave the system when it should not? Next comes the question of which pipe. Last comes the question of where, to within a few feet. Skipping to the expensive gear tends to produce a confident answer to the wrong question. Our guide on how to find a water leak in your house covers the checks you can do before calling.

No single tool finds every leak, so leak detection in Corona usually combines two or three.
Method	What it finds	Good fit when	Limits
Meter and pressure-drop test	Whether any leak exists, and on which side of the house valve	The bill is up and nothing is visible	Does not locate the leak
Acoustic listening	The sound of water escaping a pressurized pipe	Slab or yard lines, a hiss at night	Noisy traffic or plumbing masks it
Thermal imaging	Temperature differences from hot water or wet material	Hot line leaks, wall and ceiling moisture	Shows a surface pattern, not an exact point
Moisture meters	Dampness inside drywall, wood or flooring	A stain with an unknown source	Cannot tell clean water from other moisture
Tracer gas	Gas escaping from a sealed, filled line	Buried or inaccessible lines that make no sound	Needs the line isolated first
Pipe camera	The inside of drain lines	A suspected drain leak or a break in a waste line	Does not test pressurized supply pipes

Tenants and landlords

Reporting and recording a leak in a rental

Renting, or managing a rental: documenting a leak

About 37 percent of Corona housing units were renter-occupied at the 2020 census, so many requests for leak detection in Corona come from tenants rather than owners. If you rent, a rising bill and a damp wall are worth reporting to the landlord in writing right away, with dated photos and the meter reading. That record protects you if a dispute about damage or the bill comes up later.

A written finding from a leak search, naming the section of line and the evidence, also helps an owner decide on a repair and gives an insurer something concrete. Coverage depends entirely on the policy, so read does homeowners insurance cover leaks and burst pipes? for the common questions. Tell the dispatcher who owns the property and who will let the plumber in.

For tenants and landlords

Photos with datesThe stain, the meter dial and any bill that shows a change.
The meter readingTwo readings with everything off, and how long apart.
A written note to the ownerSay what you saw and when. Keep a copy.
Access arrangementsWho has the key, and which days someone is home.
Water already usedDo not run extra water to test. It adds to the bill and the damage.

Paper trails settle most disputes about who owes what.

After the search

What happens once the leak is found

You see what was found
The location, the pipe involved and how it was proven, in words you can follow.
Options are explained
A spot repair, a reroute around the damaged section, or replacing a whole run. See pipe repair and repiping.
Access is planned
A leak under a slab, in a wall or beneath a patio needs opening, then closing and patching. Ask who does the finish work.
Pressure is rechecked
After the repair, the meter test is run again to confirm the leak stopped and nothing else is hiding behind it.

Questions

Leak detection in Corona: common questions

How do I know if I really have a hidden leak?

Turn off everything that uses water, then watch the meter. If the dial or leak indicator keeps moving, water is escaping. Close the valve where the line enters the house and look again: stopped means the leak is inside, still moving means the buried line. Call once you have that answer.

Can you find a leak without digging up my yard or floor?

Mostly yes. Listening gear, thermal imaging and tracer gas narrow a leak to a small spot before anything is opened. Digging or cutting then happens at one point instead of across the property. Some leaks, especially ones that make no sound, take more than one method to confirm.

Who is responsible for the line between the meter and my house?

That depends on where the city’s side ends, and a general page cannot settle it for your lot. Corona Utilities took a digital inventory of its service lines, including the customer-owned side. Ask the city’s customer care office where its responsibility stops before you decide who pays.

My Corona water bill doubled. Is that always a leak?

No. Irrigation schedules, a guest staying, a filling pool and a running toilet all raise a bill. But a jump with no change in habits is worth the meter test. A toilet flapper that leaks can waste a surprising amount with no sound, so check that first.

Is the pressure regulator my job or the city’s?

Corona’s Answer Center says the pressure regulator is the customer’s responsibility to replace if needed. A plumber can read your pressure with a gauge on a hose bib. If it is high, replacing the regulator can stop a run of repeat leaks around the house.

Does hard water cause leaks?

Not directly. Mineral scale builds up in valves, cartridges and heater connections, which makes them stick, drip or fail. Pipe leaks have other causes: age, pressure, corrosion and installation. Corona’s average is 146 ppm, classed hard by the city, though sources vary widely.

How much does leak detection cost?

It depends on how many methods are needed, how hard the leak is to reach, and whether the search is for one suspected spot or the whole house. A meter test is quicker than tracing a silent slab leak. Ask about pricing when you call and describe what you have seen.

Will the detection fee be added to the repair?

How the search and the repair are billed is something to settle on the phone, before the visit. The search and the repair are separate jobs with different work. Ask about pricing when you call and say whether you expect to repair on the same visit.

Can I get same-day leak detection in Corona?

Same-day leak detection in Corona is available, and the line is open 24/7. Timing depends on the schedule and when you call, so ask. If water is actively flooding, close the house valve first and say so on the call.

What should I do right now if I suspect a leak?

Close the main valve if water is visible or spreading. Keep clear of any water near outlets or the electrical panel. Photograph the damage, take a meter reading, and call. Avoid drilling or cutting into walls yourself, since that can cut into a pressurized line.

Is a leak the same as a burst pipe?

No. A leak is usually slow and hidden; a burst is sudden and obvious. A neglected leak can become a burst. If water is spraying or pouring, treat it as an emergency and see burst pipe repair.

Can a toilet or irrigation leak trigger a leak search?

Yes, and they are the most common simple finds. Toilet tanks can leak into the bowl silently, and irrigation valves can stick open. Part of a search is ruling these out so you are not billed for opening a wall when the culprit is a flapper.

Guides

Guides that help before you call

Think there is a leak in your Corona home?

Call any hour for leak detection in Corona. Same-day service is available. Close the main valve first if water is spreading.