A leaking tank can go unnoticed for months while it wastes water, raises bills and weakens foundations.
Warning signs
- Higher water bills with no change in use.
- Damp or salt deposits near the tank.
- The pump or float valve running constantly.
- Changes in water colour or smell.
- Settling or cracks in the floor above an underground tank.
A simple test
- Close the inlet valve and stop using water.
- Mark the water level.
- Check again after 12–24 hours.
A clear drop means a leak. The lasting fix is cleaning, crack repair and a food-grade epoxy lining — see water tank waterproofing or contact us.