Professional testing, inspections, and repairs performed by licensed WSSC Cross‑Connection Control Technicians.
Trusted Backflow Prevention for Prince George’s County & Montgomery County, MD
Across Prince George’s County and Montgomery County, property owners count on certified WSSC Cross‑Connection and Backflow Prevention Technicians to safeguard their drinking water and keep their systems fully compliant. Whether you manage a commercial building, oversee a multi‑unit property, or simply want to protect your home, our licensed technicians deliver precise testing, thorough inspections, and clear documentation that meets every WSSC requirement. We help you avoid fines, prevent contamination risks, and stay ahead of annual testing deadlines with service that’s fast, accurate, and built around local code expertise.
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Our Backflow Testing & Prevention Services
Certified WSSC technicians providing reliable testing, inspections, and compliance support for every property type.
Backflow Testing
Protect your water supply with routine backflow inspections performed by certified professionals. We test and certify that your backflow prevention device is functioning properly and meets all regulatory requirements. Regular inspections help prevent contamination and ensure compliance with local plumbing codes.
If your backflow preventer is leaking, malfunctioning, or failing a test, prompt repairs are essential. Our technicians diagnose the issue and restore your system to safe working condition using high-quality parts and proven methods. We minimize downtime and ensure your water remains protected.
Installing a backflow prevention device is a critical step in safeguarding your potable water. We handle everything from system design to final testing, ensuring your installation meets all code requirements and functions reliably. Ideal for new construction, irrigation systems, and commercial plumbing setups.
When your backflow preventer reaches the end of its service life or fails beyond repair, we provide expert replacement services. Our team removes the old unit, installs a new, compliant device, and performs full testing to confirm performance. Fast, efficient, and built to last.
Understanding Backflow, Prevention, and Cross‑Connection Control
A simple breakdown of what backflow is, how it threatens water quality, and the certified systems used to stop it.
What is Backflow?
In plumbing, the term backflow defines wastewater that is flowing backward towards - and possibly into - clean water lines. A property must prevent backflow to avoid its clean water supply from being contaminated by wastewater.
Backflow Prevention
Backflow prevention refers to an engineered system’s preventative measures to stop water from flowing the wrong way. In most scenarios, backflow prevention is intended to keep wastewater from returning and entering into clean water lines and the fresh water supply.
Any connection between clean (potable) water and non-potable water where contamination could occur. This differs from backflow in that it is the physical connection that allows contamination, whereas backflow is the event where contaminated water actually flows backward. Cross-connection is prevented by installing backflow prevention devices, such as air gaps, vacuum breakers, RPZs, etc.
Common Types of Backflow Prevention
At Nationwide, we routinely service each of the following backflow systems:
Double Check Valve Assembly (DCVA)
Used in low contamination risk situations, this system uses two check valves in a series to prevent backflow.
Reduced Pressure Zone Device (RPZ / RPBA)
Used in high risk contamination scenarios such as facilities that produce chemical, medical, and industrial waste. The RPZ protects against both back-pressure and back siphonage.
Air Gap
Physical space between the water outlet and the highest possible water level.
Atmospheric Vacuum Breaker (AVB)
Commonly used in irrigation systems. A simple system that uses air to stop back-siphonage
Pressure Vacuum Breaker (PVB)
Commonly used outdoors in commercial sprinkler setups. It’s like AVB but works under constant pressure.
Commercial buildings in Prince George’s County and Montgomery County require precise, compliant testing to meet WSSC standards. Our certified technicians handle complex systems, annual inspections, and accurate reporting for offices, retail spaces, restaurants, and multi‑unit facilities.
Residential
Homes rely on proper backflow prevention to keep drinking water safe from everyday cross‑connections. Our WSSC‑certified technicians provide quick testing, simple documentation, and reliable protection for your home’s plumbing system.
Reach Out! We’re Ready to Help
Have a question or need service? Reach out today to speak with our team. We’re here to provide fast, professional plumbing support and help you get your system back on track—no matter the size of the job.
