Copper Pipe Leak Repair in Ontario, CA
Our plumbers find and fix pinhole leaks, failed solder joints and corroded fittings on copper plumbing in Ontario, CA.
- Upfront Pricing
- Repipe Options When Needed
- Thermal Imaging Leak Detection
- Licensed & Insured
Need Copper Pipe Leak Repair in Ontario, CA?
Contact us now for a consultation and protect your property from further water damage.
Reliable Copper Pipe Leak Repair Services for Ontario, CA Homes
FKM Plumbing knows that one copper pinhole leak is frequently a warning sign of more to come. We look at the condition of the surrounding pipe, check water pressure and inspect grounding and bonding. That gives you a clear picture of whether a spot repair is enough or whether a section repipe is the smarter choice.
Our expertise includes:
- Section replacement for severely damaged copper piping.
- Water pressure, grounding and bonding checks after every repair
- Expert soldering and brazing for lasting copper pipe repairs.

Additional Plumbing Repair Services in Ontario, CA
We offer expert plumbing repair services across Ontario, CA to stop leaks, clear blockages, and keep every fixture working the way it should.

Customers
Why Choose FKM Plumbing for Copper Pipe Leak Repair in Ontario, CA?
Choosing FKM Plumbing means you're getting skilled professionals who understand the details of copper plumbing systems. We focus on delivering repairs that stand the test of time, minimizing future issues for your home.
- Honest Advice, We tell you when repeated pinholes mean a repipe will save you money.
- Quality Materials, We use only high-grade copper and fittings for repairs, ensuring durability and longevity.
- Modern Tools, We use non-invasive leak detection technology to pinpoint leaks without needless damage.
Citywide Coverage
Whether you're in the heart of Ontario or on its outskirts, our team is ready to respond quickly to your copper pipe leak emergency. We provide consistent, high-quality service across our entire service area.
Experienced Team
Our team understands the corrosion patterns that hard water, chlorine and high velocity create in copper. That experience helps them spot weak pipe before it leaks.
Safety-First Approach
When soldering, we use heat shields, wet rags and a fire extinguisher, and we check the area afterward for any smoldering. In sensitive spots, we use flame-free press fittings instead.
Trusted Certified Ontario Plumbing Services Professionals
At FKM Plumbing, we take pride in providing certified plumbing services throughout Ontario, CA. Backed by recognized industry credentials, our experienced plumbers combine technical skill with genuine customer care. Whether it is repair, installation, or maintenance, we follow strict safety and quality standards to deliver lasting results you can trust.
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PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationPrecision Copper Pipe Leak Repair Services in Ontario, CA
Copper Slab Leak Repair in Ontario
Many homes built on slabs have copper water lines running under the concrete. When those lines leak, you may notice warm spots on the floor, the sound of running water or a moving meter. We locate the leak electronically and either repair it through the slab or reroute the line overhead. We explain both options with upfront pricing.

Corrosion-Related Leak Repair in Ontario
Corrosion is a natural enemy of copper pipes and is made worse by certain water chemistries. Around Ontario, flushing the water heater yearly and cleaning aerators keeps scale buildup from cutting flow and efficiency. This can lead to thinning pipe walls and eventual leaks. Our team assesses the extent of corrosion, which may show up as blue-green stains on pipes or fixtures. For localized corrosion, we perform spot repairs, but if corrosion is widespread, we may recommend re-piping sections to prevent recurring issues. We make sure all new connections are properly sealed and protected.
Copper Fitting and Valve Repair in Ontario
Angle stops, shutoff valves and copper fittings under sinks and behind toilets can weep or seize over time. Hard water minerals build up inside valves and prevent them from closing. We replace failing valves and fittings with quarter-turn ball valves that are easier to operate. That makes future repairs and emergencies easier to manage.
Copper Repair vs Repipe Cost in Ontario, CA
A single copper leak repair is affordable and fast. If you have had two or more pinhole leaks in a year, the copper is likely thinning throughout the system. At that point a PEX or Type L copper repipe can cost less over time than repeated repairs and water damage. We help you compare both options with real numbers.
Slab Leak Detection and Repair in Ontario
Copper pipes commonly run under concrete slabs in Ontario homes. A slab leak can be particularly challenging to detect, and shifting soil can put extra stress on those pipes. Earthquakes are a constant consideration in Southern California, and seismic straps and flexible connectors help keep water and gas lines secure during shaking. We use acoustic and thermal imaging technology to locate these hidden leaks without invasive demolition. Once found, we offer direct access repair or re-routing options to fix the damaged copper section, minimizing disruption to your home.
Burst Copper Pipe Repair in Ontario, CA
A burst copper pipe is a plumbing emergency that requires immediate attention, especially during hard freezes. On an occasional cold night, covering backflow preventers and outdoor valves is usually all it takes to avoid a break. When temperatures drop sharply, water inside pipes can freeze and expand, causing them to rupture. FKM Plumbing offers fast response for burst copper pipe repair in Ontario, CA, limiting water damage to your home. We promptly isolate the leak, remove the damaged section and replace it with new copper piping, restoring your system to full function and protecting it against future freezes.
Underground Copper Pipe Leak Repair in Ontario
Leaking underground copper pipes can lead to serious water loss and foundation issues, especially after heavy rainfall. We use trenchless repair methods where possible to fix or replace damaged underground copper lines, reducing the need for major excavation. This preserves your landscaping and minimizes the overall impact on your property.

Preventive Copper Pipe Maintenance in Ontario, CA
Beyond reactive repairs, FKM Plumbing also offers preventive maintenance services designed to extend the life of your copper pipes in Ontario, CA. This includes assessing water quality, inspecting for early signs of corrosion or wear and advising on water treatment solutions like water softeners to reduce hard water effects. Regular inspections can identify potential weak spots before they turn into costly leaks, saving you money and stress in the long run and keeping your plumbing robust.
Copper Pipe Leak Repair Near Me in Ontario, CA
We work on copper plumbing in local homes every week and understand how water quality here affects it. That helps us make repairs that last and spot early signs of trouble. Call us to schedule a service call.
When you search for "copper pipe leak repair near me" in Ontario, CA, FKM Plumbing is the trusted local choice. Our location allows us to provide rapid response times, so your plumbing emergency is addressed quickly and efficiently. We pride ourselves on being a dependable community partner.
FKM Plumbing at a Glance
- Licensed and insured plumbers serving Ontario, CA
- Same-day appointments and 24/7 emergency response
- Upfront, flat-rate pricing before work begins
- 4.8-star rated by 754+ Southern California customers
Ontario Map
Ontario Information
- Population
- 182,457
- Area codes
- 909/951/626
- Service area
- Ontario and communities within 40 miles
- Nearby
- Chino, Eastvale, Upland, Rancho Cucamonga
Copper supply lines in many Ontario, CA homes were installed decades ago in thin Type M pipe, and treated water combined with high pressure slowly pits them until pinhole leaks appear. Around Ontario, flushing the water heater yearly and cleaning aerators keeps mineral buildup from cutting flow and efficiency.
Expert Services
Trust our professionals for reliable FKM Plumbing solutions in Ontario, CA.
Our Specialized Plumbing Services in Ontario, CA
At FKM Plumbing, we provide a complete range of plumbing services across Ontario, CA. From leak detection to full system installations, our team ensures fast, precise, and affordable service for both residential and commercial properties. Explore our core services below:
How Our Copper Pipe Leak Repair Process Works in Ontario, CA
Our process for copper pipe leak repair in Ontario, CA is designed to be efficient, transparent and effective.
Request a Quote
Call (213) 871-0701 and tell us where you see water, stains or hear dripping. We will schedule a plumber and help you shut off the water if needed.
Pinpoint the Leak
We use thermal imaging and moisture meters to locate the leak with minimal openings. Then we give you a clear price for the job.
Repair and Inspect
We replace the damaged copper with new pipe or press fittings and pressure test the line. We inspect nearby pipe and check pressure and grounding.
Frequently Asked Questions About Copper Pipe Leak Repair in Ontario
The cost of copper pipe leak repair in Ontario can vary significantly depending on the leak's location, severity and accessibility. Minor repairs, like a simple solder patch, might range from $200 to $500. More complex issues, such as a slab leak requiring specialized detection and repair, could range from $800 to $3,000 or more. We provide a detailed estimate after our first inspection.
We work with all standard types and brands of copper piping, including Type K, L and M, which are commonly found in residential and commercial plumbing systems. Our technicians are skilled in repairing and integrating piping from manufacturers like Mueller Industries, Wieland and Cerro, for compatibility and quality.
Copper pipes can leak due to several factors, including corrosion from water chemistry when the pH is too acidic or alkaline, aggressive soil conditions, high water pressure, poor installation or physical damage from foundation shifts. Around Ontario, flushing the water heater yearly and cleaning aerators keeps mineral buildup from cutting flow and efficiency. Pinhole leaks often result from long-term internal corrosion.
We typically use Type L copper, which has thicker walls than Type M and lasts longer. In some situations we use ProPress fittings or a PEX transition.
Type K, L and M copper pipes differ mainly in their wall thickness and thus their pressure ratings. Type K has the thickest walls and is used for underground service and main water lines. Type L is common for interior water supply and radiant heating. Type M has the thinnest walls and is usually used for less demanding applications. We are skilled in repairing all types.
PEX resists the corrosion and scale that cause copper pinholes and is flexible and quick to install. If you have repeated copper leaks, repiping with PEX is often a cost-effective long-term solution.
Most accessible repairs take one to two hours. Leaks inside walls or ceilings can take two to four hours, and slab leak repairs may take a whole day.
Yes. Our repairs include a written workmanship warranty, and copper pipe and fittings carry manufacturer warranties. We explain the coverage before starting.
What People Are Saying About Our Plumbing Experts?

Laura S.
I scheduled a water heater replacement, and the team made the process smooth and affordable. The new unit works perfectly, and they cleaned up after completing the job.
Water Heater Replacement · Chino, CA
Patricia H.
We had a slab leak that two other companies could not find. FKM Plumbing located it in under an hour, explained our options, and the price matched the quote to the dollar.
Slab Leak Repair · Ontario, CA
Daniel K.
A pipe burst at 11 pm and they actually answered. The plumber showed up within the hour, shut everything down, and had us back to normal the next morning. Could not ask for more.
Emergency Plumbing · Chino, CA
Mark T.
When our office needed drain cleaning, FKM Plumbing provided quick, reliable service. The plumber arrived on time and made sure every drain flowed perfectly before leaving. Very satisfied.
Drain Cleaning · Chino, CA
Sofia M.
Two new toilets installed in one visit, no mess left behind, and the tech even adjusted a faucet he noticed was dripping. Fair pricing and really friendly.
Toilet Installation · Chino, CA
James P.
Our commercial plumbing system had a leak under the sink, and FKM Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · Jurupa Valley, CA













