Backflow and the Importance of Installing a One-Way Check Valve
Backflow and the Importance of Installing a One-Way Check Valve

Backflow occurs when water flows in the opposite direction of its intended path—moving from a property’s plumbing system back toward the main water supply. This reverse flow is typically caused by sudden changes in water pressure.
When backflow happens, water inside the pipe can be pushed or pulled backward. The meter registers this movement as new consumption, even though the water was previously measured, resulting in inaccurate usage readings.
Installing a One-Way Check Valve (also known as a backflow preventer) ensures water can only flow in the correct direction. This prevents backflow and eliminates the risk of the meter recording the same water more than once, helping maintain accurate usage data.
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