Backflow testing and certification services in San Jose
Backflow Testing & Certification in San Jose
Protect Your Water. Stay Compliant. Call (408) 283-0600 Today!
Backflow is a serious plumbing issue that can jeopardize your health and property. If contaminated water is flowing back into your home or business’s clean water supply, it’s time to act. At Flow City Plumbing, we provide expert backflow testing, certification, and prevention device installation throughout San Jose and surrounding areas.
Whether you’re a homeowner, property manager, or business owner, we’ll ensure your property is protected and up to code.
What Is Backflow & Why Does It Happen?
Backflow occurs when water flows in the opposite direction than it should—allowing potentially contaminated water to re-enter your clean supply. This reversal typically happens due to a sudden drop in water pressure or a system imbalance. It poses serious health risks, especially if waste water, pesticides, or industrial fluids are involved.
To prevent this, backflow prevention devices are required in many systems—and California law mandates annual testing of these systems to ensure they’re functioning properly.
Why Is Backflow Testing So Important?
Certified backflow testing is the only way to guarantee that your clean water supply remains uncontaminated. During a test, our licensed experts will check for vulnerabilities and ensure your system meets all city and state standards.
Common backflow contaminants include:
Wastewater and bacteria
Fertilizers and pesticides
Toxic chemicals
Heavy metals and other industrial runoff
Microorganisms from irrigation or fire suppression systems
Whether it’s for drinking water, irrigation lines, or commercial equipment, testing helps keep your system safe and compliant.
Backflow Prevention Devices We Service:
We are trained and certified to inspect and test all major backflow prevention assemblies, including:
Double check valve assemblies (DCVA)
Pressure vacuum breakers (PVB)
Reduced pressure zone devices (RPZ)
Spill-resistant pressure vacuum breakers (SVB)
Our technicians are fully licensed to conduct annual certifications and provide documentation to your local municipality for compliance purposes.
What You Can Expect With Flow City Plumbing
✔️ Same-day or next-day testing available
✔️ Certified and licensed backflow specialists
✔️ Familiarity with all local San Jose codes and regulations
✔️ No travel fees within a 40-mile radius
✔️ Honest pricing & free estimates on device repairs or replacements
We also install and maintain backflow prevention systems, ensuring your property has the right protection in place year-round.
Schedule Your Backflow Test Today
Avoid contamination, fines, and shutdowns. Call Flow City Plumbing at (408) 283-0600 for trusted backflow testing and certification in San Jose and nearby areas.
Let us help you protect your water — and your peace of mind.