Why Is Your Water Tank Overflowing? 4 Causes and How to Stop It

### Stopping Continuous Water Tank Overflow

Water overflowing from terrace tanks wastes municipal water, spikes electricity bills from continuous pump running, and stains terrace walls with green moss.

The 4 Root Causes: 1. **Worn-Out Rubber Washer in the Float Valve:** The tiny internal rubber gasket that presses against the water orifice wears out or hardens over time. 2. **Punctured Float Ball:** If the hollow plastic ball develops a micro-crack, it fills with water, sinks to the bottom, and can never rise to shut off the valve. 3. **High Supply Pressure from Submersible Pumps:** Submersible borewell pumps often produce pressure higher than lightweight plastic valves can seal against. 4. **Algae or Grit Jamming the Hinge Mechanism:** Windborne dust jams the pivot hinge so the lever cannot swing upward.

**The Solution:** Have PlumbMaster install a heavy-duty, high-pressure forged brass ball valve or an electronic automatic water level controller.