Why is my pool pump basket not filling with water?

Blocked Skimmer or Drain: Debris can block the skimmer baskets or the main drain, restricting water flow to the pump.
Leak in the Suction Line: If there's a crack or leak in the suction line, air may be getting into the system, preventing the basket from filling with water.
Faulty Pump Lid O-ring: If the pump lid's O-ring is damaged or not seated correctly, it can allow air into the system, hindering the pump's priming process.
Low Water Level: If the pool water level is too low, the skimmers can draw air instead of water, leading to an empty pump basket.
Closed or Partially Closed Valves: Ensure that all the suction valves are open. If they're closed or only partially opened, it can restrict water flow to the pump.
Pump Impeller Blockage: The impeller in the pump can get blocked by debris, preventing it from drawing water effectively.
Faulty Pump: In some cases, the pump itself might be malfunctioning or may have lost its prime.

To address the issue, it's essential to check each of these potential causes systematically. If you're unsure or unable to resolve the problem, consulting with a pool professional can help diagnose and fix the issue.