Protecting Your Water Supply for Homes & Businesses
Backflow issues can compromise the safety of your drinking water and put your property at risk of code violations. At Spencer’s Plumbing Services, we provide professional backflow prevention and testing services in Houston to help homeowners and businesses stay compliant, safe, and worry-free.
Our licensed and experienced plumbers ensure your backflow prevention devices are installed, tested, repaired, and certified according to Houston and Texas regulations.
Backflow occurs when contaminated water flows backward into the clean water supply due to changes in water pressure. This can happen because of events like water main breaks, heavy water usage, or pressure drops in the municipal system.
Without proper backflow prevention, harmful substances such as chemicals, bacteria, and debris can enter your drinking water posing serious health risks.

Houston’s plumbing infrastructure, irrigation systems, commercial properties, and frequent pressure fluctuations make backflow prevention especially critical. Local regulations require many properties to have approved backflow prevention devices and to test them regularly to protect public water supplies.
At Spencer’s Plumbing Services, we offer complete backflow solutions for residential and commercial properties across Houston.
We install approved backflow prevention devices designed for your specific plumbing system, ensuring proper placement and code compliance.
Annual backflow testing is required for many properties in Houston. Our certified technicians perform accurate testing and provide proper documentation for city submission.
If your device fails inspection, we provide fast and reliable repairs or replacement if the unit is no longer serviceable.
When property changes, renovations, or code updates require relocation or upgrades, we handle the entire process efficiently.
We follow a thorough and compliant testing process to ensure accuracy and peace of mind:
In Houston, most backflow prevention devices are required to be tested annually to ensure they are functioning properly and protecting the public water supply. Additional testing may be required after a new installation, repair, relocation, or if the device fails an inspection. Regular backflow testing helps property owners stay compliant with local regulations, avoid penalties, and ensure safe, clean drinking water for their home or business.
Schedule Your backflow prevention testing Service Today
We work with all common backflow prevention assemblies, including:
RPZ devices provide the highest level of backflow protection and are used in high-risk applications where water contamination is a concern. They are commonly required for commercial properties and irrigation systems and must be tested regularly to remain compliant.
DCVAs are designed for low-to-moderate risk systems and help prevent backflow through dual check valves. These devices are often used in residential and commercial applications and require routine testing to ensure proper operation.
PVBs protect against back-siphonage caused by pressure drops and are most commonly installed on irrigation systems. Proper installation and periodic testing are essential to maintain effective backflow prevention.
Our team services both residential and commercial systems, including irrigation, fire suppression, and industrial applications.


Houston and Texas regulations require certain properties to install and maintain approved backflow prevention devices. These devices must be tested regularly by certified professionals.
Failure to comply can result in:
Our team helps you meet all requirements by handling testing, documentation, and guidance throughout the process.
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Call us today or book an appointment online to get your hot water running perfectly again.
At Spencer’s Plumbing Services, we provide a full range of professional plumbing solutions for residential and commercial properties across Houston. Whether you need routine maintenance or urgent repairs, our experienced team is ready to help.

Fast, reliable response for plumbing emergencies when you need it most.

Accurate leak identification and long-lasting repair solutions.

Installation, repair, and maintenance for traditional and tankless water heaters.

Effective solutions for clogged drains and damaged sewer lines.

Safe, code-compliant gas line services for homes and businesses.

Thorough inspections to identify issues before they turn into costly repairs.
Each service is performed by experienced professionals committed to quality and reliability.
Spencer’s Plumbing Services works with a wide range of industries across Houston, delivering dependable plumbing solutions tailored to each environment’s unique requirements. Our experience allows us to handle everything from routine maintenance to complex plumbing systems with efficiency and care.
We are proud for delivering reliable sewer camera inspections for residential and commercial properties across these areas:
Most backflow prevention devices must be tested annually, though some situations may require more frequent testing.
Only licensed and certified backflow testing professionals are authorized to perform and certify backflow tests.
If a device fails, we’ll explain the issue and provide repair or replacement options to restore compliance.
Our experienced team is just a call away, ready to tackle any plumbing issue, big or small. From routine maintenance to emergency repairs, we’re here to ensure your plumbing systems run smoothly and efficiently. Don’t wait contact us today for reliable service you can trust.
License: RMP#45302
After hours available on call or appointment. 24/7 emergency services