Installing a rainwater tank is a smart investment, but like any system, issues can pop up from time to time. Knowing the most common water tank problems and how to fix them will help you keep your tank running smoothly for years.
1. Smelly or Discoloured Water
One of the most common water tank problems is foul-smelling or discoloured water. This usually happens due to organic matter like leaves, dust, or algae entering the tank.
Fix:
- Clean your gutters and install leaf guards
- Regularly flush first-flush diverters
- Inspect and clean the inside of your tank as needed
- Consider installing a UV filter or water treatment system if the water is for drinking
2. Algae Growth
If your tank is exposed to sunlight, algae can grow, making water green and unsafe for use.
Fix:
- Use an opaque or covered tank to block sunlight
- Fit a tight tank lid to keep light and debris out
- Add a filtration or treatment system if algae persists
3. Pump Issues
Without a working pump, tank water may not reach taps, toilets, or irrigation systems. Common pump issues include low pressure, noisy operation, or the pump failing to turn on.
Fix:
- Check power supply and fuses
- Clean or replace pump filters
- Service the pump regularly
- Install a pump cover to protect it from weather damage
4. Cracks or Leaks
Over time, tanks may develop cracks, especially if they weren’t installed on a stable base or if exposed to extreme weather.
Fix:
- Inspect the tank and base regularly for signs of movement
- Seal small cracks with an appropriate tank sealant
- For major leaks, contact a professional or consider replacement
5. Overflow or Blocked Pipes
Heavy rain can cause overflows, while debris can block pipes and prevent water from flowing properly.
Fix:
- Keep gutters and downpipes clear of leaves and dirt
- Check that overflow pipes are directed away from the tank base
- Install mosquito-proof screens to prevent blockages and pests
6. Mosquitoes and Pests
Stagnant water attracts mosquitoes, while rodents or insects can enter poorly sealed tanks.
Fix:
- Fit insect-proof mesh screens on inlets and overflows
- Keep the tank lid tightly closed
- Inspect regularly for signs of pests
Preventing Future Tank Problems
Most water tank problems can be avoided with regular care and maintenance. Keep a schedule for cleaning, check filters often, and make sure your pump is serviced. For detailed guidance, check resources from NSW Health on safe water storage or explore the Australian Government’s water quality advice.
Final Thoughts
By keeping an eye out for these common water tank problems and addressing them early, you’ll protect your investment and enjoy safe, reliable water for your home or garden.
