Introduction
A backflow preventer acts like a one‑way valve: it keeps contaminated water from flowing back into the potable water supply. These devices play a quiet but vital role in our plumbing infrastructure. Annual testing, now mandated across Virginia, not only protects public health but can also prevent expensive repairs and penalties.
How backflow can happen
Pressure changes caused by water main breaks, fire hydrant use or internal plumbing failures can reverse normal flow. Without a functioning preventer, fertilisers, pesticides and bacteria can siphon into drinking water lines.
The economic case for annual testing
- Avoid penalties and shut‑offs: Utilities may disconnect service if you ignore testing requirements. Reconnection fees can be steep.
- Prevent property damage: A failed device can cause leaks or back‑ups that damage landscaping and interior plumbing.
- Lower insurance risk: Some insurers view annual backflow testing as a preventive measure and may offer reduced premiums.
What to expect during a test
A certified tester will isolate the device, check valves and seals, and record the results on a state‑approved form. The process typically takes 20–30 minutes. If the device fails, state law requires repair or replacement within 15 days.
Choosing the right tester
Always hire a DPOR‑licensed Backflow Prevention Device Worker. Ask for proof of certification and check with your local utility for preferred providers. Consider scheduling tests alongside seasonal irrigation maintenance to reduce costs.
Final thoughts
Annual backflow testing isn’t just a regulatory checkbox—it’s an investment in community health and your own plumbing system. By staying ahead of the requirements, you help keep Virginia’s water supply safe and avoid unnecessary expenses.
