When conducting a flow test, a difference in elevation between the static/residual measuring point and the flow hydrant is important. Is this statement true or false?

In flow testing, the difference in elevation between the static/residual measuring point and the flow hydrant is not a factor that generally influences the results of the test significantly. This is because flow tests are meant to measure the availability of water under pressure to determine the capacity of a water supply system. While elevation differences can impact water pressure, standard practices in flow testing usually normalize these variations to focus on the pressure readings themselves.

The pressure measured at the test hydrant reflects the system's ability to supply water regardless of minor elevation changes. Training and guidelines often emphasize the importance of utilizing consistent measurement points, but the main goal is to determine the flow rate and residual pressure, not to analyze elevation effects.

Therefore, the assertion that the difference in elevation is important in this context is not accurate, which makes the statement false. Understanding this helps to clarify that the results of flow testing should primarily rely on direct measurements rather than potential elevation effects, provided they are not extreme or outside the acceptable operational range.