What can cause water leakage around pool filter?

1. Worn-out or Damaged Seals: Over time, the seals around the filter, especially the O-rings, can deteriorate and cause water to seep out. Make sure the seals are in good condition and replace them if necessary.

2. Loose Hose or Pipe Connections: Ensure all the hose and pipe connections to and from the filter are tight. If any of these connections are loose, water can escape.

3. Cracked Filter Tank or Housing: If the filter tank or housing is cracked, water can leak out. Inspect the tank for any visible cracks or damage and replace it if needed.

4. Faulty Filter Multiport Valve: The multiport valve allows you to switch between different filter functions. If the valve is not functioning correctly or its gaskets are worn out, it can lead to water leakage. Check the valve and have it repaired or replaced if necessary.

5. Improperly Installed or Damaged Pressure Gauge: The pressure gauge on the filter housing helps you monitor the system pressure. If the gauge is not installed correctly or damaged, it can cause water leakage. Make sure the gauge is properly installed and in working condition.

6. Damaged Sight Glass: Some filters have a sight glass to observe water flow and pressure. If the sight glass is cracked, it can leak water. Replace the sight glass if it's damaged.

7. Backwash Line Issue: If the backwash line is not connected correctly, blocked, or damaged, it can cause water to come out of the filter instead of being directed away from the pool.

If you're unsure of the cause of the water leakage, it's best to consult with a pool professional for proper diagnosis and repair.