How often shall high and low water level alarms be tested?

• A. Annually
• B. Semi-annually
• C. Weekly
• D. Monthly

Answer: (B)

High and low water level alarms must be checked to confirm they will actually warn you if water levels move outside safe limits. Testing these alarms on a semi-annual basis keeps a practical balance: it catches sensor drift, wiring issues, or faulty switches before they fail when a problem arises, without requiring overly frequent testing. During the test, you verify that each threshold triggers the appropriate alarm, that audible and visual indicators operate, that the control panel or annunciator reflects the condition, and that the system can be reset after the level returns to normal. If the system includes remote signaling, you confirm that the signal is transmitted and received. While you should follow any manufacturer or authority having jurisdiction requirements, weekly would be unnecessarily frequent for these alarms, monthly is more than typically needed, and annual testing may allow faults to go undetected for too long.