Leak Detection in Modesto, CA
Hidden leaks can damage flooring, walls, foundations, cabinets, yards, and pool systems long before the source is obvious. Derek Sawyer’s Heating & Air Conditioning provides leak detection services for homeowners in Modesto, CA and nearby areas, helping locate water leaks so the right repair plan can be made.
If you are comparing leak detection companies because you have a high water bill, damp flooring, a suspected slab leak, pool water loss, or unexplained moisture, our plumbing team can inspect the problem, narrow down the source, and explain the next step clearly.

Leaks do not always show up where they begin. Water can travel behind walls, under flooring, through cabinets, under concrete, or through soil before it becomes visible. Professional leak detection helps avoid guesswork and can reduce unnecessary opening of walls, floors, or hardscape.
Leak Detection Services for Modesto Homes
A hidden leak can start as a small plumbing issue and become a larger repair if it is ignored. Derek Sawyer’s helps homeowners investigate suspected leaks in supply lines, fixtures, walls, ceilings, floors, crawl spaces, yards, slabs, pools, and other plumbing-related areas.
Our leak detection services are designed to answer the most important question first: where is the water coming from? Once the likely source is found, we can discuss whether plumbing repair, fixture repair, pipe repair, pool plumbing service, or another next step is needed.
Water Leak Detection
Water leak detection is used when a leak is suspected but the source is not obvious. You may notice moisture under a sink, damp drywall, stains on the ceiling, warped flooring, mildew odors, water around a water heater, or a water meter that keeps moving when fixtures are off.
Our team can inspect common leak locations and use the appropriate locating method for the situation. That may include checking visible plumbing, testing fixtures, listening for pressurized line leaks, looking for moisture patterns, or evaluating whether the leak is coming from a drain, supply line, appliance connection, irrigation line, or other source.

Slab Leak Detection
Slab leak detection is especially important because the pipe may be located below concrete. A leak under the slab can cause warm flooring, damp carpet, cracking, flooring damage, unexplained water use, moldy odors, or the sound of running water when no fixture is on.
Finding a slab leak requires a careful inspection. The goal is to locate the most likely area of the leak before repairs begin. Depending on the home and symptoms, slab leak detection may include pressure testing, acoustic listening equipment, moisture readings, thermal checks, and a review of where plumbing lines are likely routed.

Pool Leak Detection
A pool that is losing water can waste money, damage surrounding surfaces, and put stress on equipment. Pool leak detection can help determine whether the water loss is related to evaporation, the pool shell, skimmer, return lines, suction lines, equipment pad, or plumbing around the pool.
Pool leaks can be tricky because water loss may happen in more than one place. A careful inspection can help separate normal evaporation from a real leak and identify whether the issue is in the pool structure, fittings, or connected plumbing.

Other Leak Detection Targets
Not every leak is inside the house. Some of the most expensive leaks happen outside, underground, or near equipment that homeowners do not check every day. Derek Sawyer’s can help evaluate a range of leak concerns, including:
- Main water line leaks
- Yard leaks and underground service line leaks
- Leaks behind walls, ceilings, and cabinets
- Water heater and fixture connection leaks
- Toilet, faucet, shower, and tub leaks
- Drain or sewer-related leaks that may need camera inspection
- Pool plumbing leaks and equipment pad leaks
Signs You May Need Leak Detection
Call Derek Sawyer’s if you notice signs of a hidden leak. Small clues often point to a bigger issue behind the surface.
- Unexplained increase in your water bill
- Water meter movement when fixtures are off
- Damp flooring, carpet, baseboards, or drywall
- Musty odors or visible mildew
- Warm spots on the floor
- Low water pressure
- Sounds of running water when nothing is on
- Standing water in the yard or near the foundation
- Pool water level dropping faster than expected
How Leak Detection Works
The right leak detection method depends on the symptoms and where the plumbing is located. Our plumber starts by listening to what you have noticed, checking the most likely sources, and looking for signs that separate a supply leak, drain leak, fixture leak, pool leak, or slab leak.
From there, the inspection may include pressure testing, moisture readings, thermal imaging, acoustic listening equipment, visible plumbing checks, or camera inspection when the concern involves drains or sewer lines. The goal is to gather enough information to recommend a practical repair path.
Why Choose Derek Sawyer’s Instead of a Leak Detection Company Only?
Some leak detection companies focus only on finding leaks. Derek Sawyer’s brings plumbing experience to the inspection, so you get help understanding what the leak may mean for the repair. That matters when the issue involves a water line, slab leak, fixture, pool plumbing, drain line, or water heater connection.
You get a local Modesto team that can evaluate the leak, explain the likely cause, and help you decide what should happen next. If a repair is needed, we can discuss the plumbing options instead of leaving you with a location and no plan.
Leak Detection and Plumbing Repair
Once a leak is located, the next step may be a targeted plumbing repair. Depending on the source, Derek Sawyer’s may recommend pipe repair, fixture repair, water heater service, drain service, sewer inspection, or another plumbing solution.
For related services, visit our plumbing services, plumbing repair, drain cleaning, sewer line repair, and water heater service pages.
Leak Detection in Modesto and Nearby Areas
Derek Sawyer’s provides leak detection services in Modesto, CA and nearby communities. Whether you are dealing with a suspected water leak, slab leak, pool leak, yard leak, or fixture leak, our team can help you find the source and decide what to do next.
If you need a leak detection company in Modesto, call (209) 266-8682 or contact Derek Sawyer’s online to schedule service.
Leak Detection FAQ
What is leak detection?
Leak detection is the process of finding the source of a hidden plumbing leak before unnecessary demolition or additional water damage occurs. It may include visual inspection, moisture checks, pressure testing, acoustic listening equipment, thermal imaging, or other locating methods depending on the leak.
What are signs that I need water leak detection?
Common signs include a higher water bill, damp flooring, warm spots, musty odors, stains on walls or ceilings, low water pressure, sounds of running water, or water collecting in the yard when no fixtures are on.
Can you help with slab leak detection?
Yes. Slab leak detection focuses on locating leaks under a concrete foundation or floor. Signs can include warm flooring, cracking, unexplained moisture, running water sounds, or a sudden increase in water use.
Do you offer pool leak detection?
Derek Sawyer can help homeowners evaluate suspected pool leaks and related plumbing concerns. Pool leak detection may involve checking the pool shell, skimmer, returns, equipment pad, plumbing lines, and visible signs around the pool area.
How do plumbers find hidden leaks?
Depending on the situation, plumbers may use moisture meters, acoustic listening equipment, thermal imaging, pressure testing, visual inspection, and camera inspection for drain or sewer-related concerns.
Should I call a leak detection company or a plumber?
If you suspect a plumbing leak, a plumbing company that provides leak detection services can help locate the source and explain repair options. This is especially helpful when the leak may be behind walls, under floors, beneath a slab, or connected to a water line.
What should I do if my water bill suddenly increases?
First, make sure fixtures are off and check for obvious toilet, faucet, irrigation, or water heater leaks. If the meter still moves or you cannot find the source, schedule water leak detection before the problem causes more damage.

