Water is leaking from around the pump housing or motor connection.

Safety first: Unplug the pump and relieve system pressure before disassembly.

• Identify leak location: Dry the pump and run it briefly to see exactly where water appears (lid, hose joints, housing seam, or motor junction).
• Replace lid O‑ring: If leaking at the lid, clean the groove and O‑ring, lubricate with silicone grease, or replace with a new Bestway lid seal.
• Tighten fittings: Check hose adapters, unions, and clamps. Tighten by hand plus a small additional turn; do not overtighten plastic threads.
• Shaft seal or housing: If water leaks between the pump housing and motor, the mechanical shaft seal is likely worn. On many Bestway pumps this requires replacing the wet end or complete pump assembly, as seals may not be individually serviceable.