Backflow Preventer in San Bernardino, CA
Keep irrigation, fire lines and commercial equipment compliant in San Bernardino, CA with professional backflow preventer service.
- Fast, Certified Technicians
- Local San Bernardino Experts
- Test Reports Filed for You
- Southern California-Specific Expertise
Protect Your Water, Call Us Today in San Bernardino, CA.
Our certified plumbers are ready to safeguard your water supply.
Backflow Preventer Service in San Bernardino, CA for Homes and Businesses
FKM Plumbing specializes in backflow prevention for homes in San Bernardino, CA. We keep your drinking water clean by preventing contaminated water from flowing back into your potable supply. Municipal water across much of Southern California is hard, leaving white scale on faucets, showerheads, and inside water heater tanks. Pressure changes and aging mains make a working assembly a critical concern.
Our expertise includes:
- Annual certified testing of RPZ, DCVA and PVB assemblies
- Rebuilding check valves, relief valves and worn rubber parts
- Repair and replacement of all backflow preventer models.

Additional Plumbing Maintenance Services in San Bernardino, CA
Our maintenance and specialty plumbing services in San Bernardino, CA protect your home year-round and extend the life of every system.

Customers
Why Choose FKM Plumbing for Backflow Preventer in San Bernardino, CA?
Water providers typically require backflow assemblies to be tested on a set schedule, and missed deadlines can lead to fines or water shutoff. We make compliance simple by scheduling, testing and filing for you.
- Prevent Damage, Proper backflow prevention avoids expensive contamination and potential damage to your home's entire plumbing system.
- Water Quality, Our services directly protect your family from contaminated water sources, a serious concern for health and peace of mind.
- Expert Plumbers, Our technicians are fully certified and trained in backflow prevention device testing and repair.
Citywide Coverage
We test and repair backflow preventers in every neighborhood of San Bernardino, from residential irrigation systems to large commercial properties. Our technicians are familiar with local water provider reporting rules.
Experienced Team
Our team of plumbers has wide experience with all types of backflow preventer systems common in Southern California. They undergo regular training to stay current on the latest devices, testing procedures, and local code updates in San Bernardino.
Safety-First Approach
Safety is paramount in all our backflow preventer services, especially when dealing with your drinking water supply. We follow all health and safety regulations, using only approved parts and methods to protect your home in San Bernardino.
Trusted Certified San Bernardino Plumbing Services Professionals
At FKM Plumbing, we take pride in providing licensed, certified plumbing services throughout San Bernardino, 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 CertificationCode-Compliant Backflow Preventer Services in San Bernardino, CA
Irrigation Backflow Preventer Installation in San Bernardino
Sprinkler and drip systems are one of the most common sources of cross-connection risk because they sit in soil with fertilizers and pesticides. Many systems use a pressure vacuum breaker or a reduced pressure assembly installed above grade. We size and install the correct device and set it at the proper height. Insulated covers or enclosures help protect it from weather and theft.

Commercial Backflow Services in San Bernardino, CA
Businesses in San Bernardino often have more complex backflow prevention requirements due to higher water usage and varied plumbing systems. FKM Plumbing provides full-service commercial backflow services, including large-scale testing, repair, and installation for multi-unit properties, industrial facilities, and restaurants. We understand the demands of commercial operations and work efficiently to minimize disruption, keeping your business compliant and your water supply safe.
Freeze and Heat Protection for Backflow Preventers in San Bernardino, CA
Above-ground backflow assemblies are exposed to summer sun and winter cold. Freezing pipes are rare in most of Southern California, and many homes have exposed outdoor plumbing that would never pass in a colder climate. Freezing can crack bodies and bonnets, while UV exposure breaks down plastic parts. We install insulated pouches, heated enclosures or lockable cages as needed. Protecting the assembly helps it pass testing and last longer.
New Backflow Preventer Installation in San Bernardino
Whether you are installing a new irrigation system, fire suppression system, or need to replace an outdated device, FKM Plumbing handles professional backflow preventer installations. We assess your property's needs and local plumbing codes to recommend the correct type and size of backflow preventer. Proper installation is critical for effective operation, and our certified plumbers make sure your new device is correctly fitted, tested, and compliant with all San Bernardino standards.
Emergency Backflow Service in San Bernardino, CA
A failing backflow preventer can pose an urgent health risk, potentially contaminating your potable water supply. If you suspect an issue or experience a sudden problem with your device in San Bernardino, CA, FKM Plumbing offers emergency services. Our plumbers are equipped to diagnose and address urgent backflow preventer problems swiftly, restoring safety to your water.
Emergency Backflow Repair in San Bernardino, CA
A failed backflow preventer can pose an urgent threat to your water quality. If you suspect a serious issue or receive a notice from the water department, FKM Plumbing offers emergency backflow repair services in San Bernardino, CA. We prioritize these urgent situations to quickly diagnose and fix the problem, restoring the integrity of your water system. Our emergency team is equipped to handle urgent repairs and protect your water supply without delay.
Backflow Preventer Repair in San Bernardino, CA
If your backflow preventer fails its annual test or shows signs of malfunction, FKM Plumbing offers professional repair services. Common issues include worn-out check valves, faulty relief valves, or damaged springs. Our team carries a wide range of replacement parts for leading brands like Watts, Wilkins, Febco, and Conbraco. We diagnose the exact problem and perform precise repairs to restore your device's full protective function, heading off potential water contamination in San Bernardino.

Annual Backflow Testing in San Bernardino
Most water providers require backflow assemblies to be tested at least once a year. Our certified testers connect a calibrated differential pressure gauge and check each check valve and relief valve. Test results are recorded on the provider's form and submitted for you. If the assembly passes, you are done until next year.
Backflow Preventer Testing Near Me in San Bernardino, CA
We know the reporting process used by water providers around San Bernardino. Our team submits results in the format they expect. That reduces paperwork headaches and follow-up calls.
Choosing a local company like FKM Plumbing for your backflow preventer needs means personalized service and a commitment to our community in San Bernardino. We pride ourselves on being accessible and responsive to all our customers, providing peace of mind that your water supply is safe.
FKM Plumbing at a Glance
- Fully licensed plumbing team covering San Bernardino, CA
- 24/7 emergency service with same-day scheduling
- Upfront, flat-rate pricing before work begins
- 4.8-star rated by 754+ Southern California customers
San Bernardino Map
San Bernardino Information
- Population
- 223,728
- Area codes
- 909/760/951
- Service area
- San Bernardino and communities within 40 miles
- Nearby
- Rialto, Redlands, Fontana, Jurupa Valley
With seasonal irrigation and weather exposure on above-ground assemblies in San Bernardino, CA, regular backflow preventer testing and maintenance keeps drinking water safe and properties compliant.
Expert Services
Trust our professionals for reliable FKM Plumbing solutions in San Bernardino, CA.
Our Specialized Plumbing Services in San Bernardino, CA
At FKM Plumbing, we provide a complete range of plumbing services across San Bernardino, 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 Backflow Preventer Process Works in San Bernardino, CA
Our process for backflow preventer testing, repair, or installation is designed for clarity and customer satisfaction.
Request a Quote
Call (213) 871-0701 or fill out our online form to schedule your backflow preventer service. We'll gather details about your needs and set up an appointment time.
On-Site Assessment
A certified technician arrives at your San Bernardino home to inspect your current backflow preventer or assess installation requirements. We diagnose any issues or plan the new setup.
Expert Service
We perform the necessary testing, repair, or installation using proven practices and quality parts. Our goal is to make sure your device works correctly and meets all codes.
Frequently Asked Questions About Backflow Preventer in San Bernardino
The cost for backflow preventer services in San Bernardino, CA varies. A standard backflow test typically ranges from $75 to $150. Repairs can cost between $200 and $600, depending on the parts needed, while new installations might range from $450 to $1,500 or more for larger commercial units. We provide a clear quote before beginning any work.
FKM Plumbing stands behind our work with a full warranty on parts and labor for all backflow preventer services. The warranty period will be outlined in your service agreement, but generally, new installations come with a manufacturer's warranty on the device and our warranty on the labor.
We service all major brands of backflow preventers, including Watts, Wilkins, Febco, Conbraco and Apollo, and Zurn. Our technicians are trained and equipped to handle various models and types, so your device receives expert attention and the right parts for repair.
Water providers may send follow-up notices, charge fees or eventually suspend service. Scheduling early avoids these problems. We can often fit urgent tests in on short notice.
Backflow preventers stop contaminated water from flowing backward into the public supply during pressure drops. Irrigation, fire lines and commercial equipment are frequent sources of contamination. Water providers require them to protect public health.
Signs of a failing backflow preventer include discolored water, strange odors from your tap, a noticeable drop in water pressure, or visible leaks around the device itself. If you notice any of these, contact a professional plumber immediately to assess the issue.
Signs of a failing backflow preventer include discolored water, unusual tastes or odors in your water, water leaking from the relief valve, or a sudden drop in water pressure. If you notice any of these issues, it is important to have your device inspected right away.
Most municipalities and water utilities require backflow preventers to be tested annually. This confirms the device is working correctly to protect the public water supply from contamination. We can help you schedule these regular inspections.
What People Are Saying About Our Plumbing Experts?

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 · San Bernardino, 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 · Fontana, 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 · Riverside, 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 · Riverside, CA
Robert G.
The trenchless sewer replacement saved our front yard. They walked us through the camera inspection footage first so we knew exactly what we were paying for.
Sewer Line Replacement · Rialto, CA
Emily R.
I called FKM Plumbing for plumbing repair, and the technician was fast, polite, and thorough. They explained the problem clearly and fixed it the same day. I will definitely hire them again. Highly recommended!
Plumbing Repair · Rancho Cucamonga, CA













