Cross Connection Practice Exam

How often should the accuracy of differential test gauges used for field testing be checked?

1. Every month

2. On a biannual basis

3. On a quarterly basis

4. On an annual basis

The correct answer is: On an annual basis

The accuracy of differential test gauges used for field testing should be checked on an annual basis to ensure they are providing reliable measurements. Regular calibration is vital for maintaining the integrity of test results, as even minor inaccuracies can lead to incorrect assessments of cross connection control devices. Annual checks allow for timely identification of any drift in accuracy, ensuring that the gauges continue to function within specified tolerances. This practice supports adherence to regulatory requirements and helps safeguard public health by ensuring that water quality measures are accurately assessed. Options suggesting more frequent checks, such as monthly, quarterly, or biannual, are more intensive than typically required, given the nature of the equipment and the frequency at which these tests are used in the field. Annual checks strike a balance between operational efficiency and the maintenance of high standards for testing accuracy.