Most backflow preventers should be inspected and performance-tested once per year by a licensed plumber. Many water providers require annual certification to keep drinking water safe. High hazard setups (irrigation with chemicals, boilers, or fire lines) may need more frequent checks. In Roanoke and nearby areas, we can assess your device, test it, and tag it during the visit. Exact intervals depend on your system and local rules; a technician will confirm on site.
Updated: 2025-12-24
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