5 Signs Your Water Tank Needs Cleaning

Rainwater tanks are an essential part of life for many Sunshine Coast homes. They provide fresh water for drinking, cooking, gardening, and household chores, but over time, tanks can accumulate debris, sediment, and even harmful bacteria. Knowing the signs that your tank needs cleaning can save you from unpleasant surprises and costly repairs.

1. Discoloured Water
One of the most obvious signs is discoloured water. If you notice your tap water is cloudy, brown, or has small particles floating in it, sediment is likely building up at the bottom of your tank. Sediment doesn’t just look bad — it can also affect the taste and safety of your water.

2. Unpleasant Taste or Odour
Water that tastes musty, metallic, or otherwise “off” is a warning sign. This can occur when algae or bacteria begin to grow in your tank, especially in areas exposed to sunlight or during warmer months. A clean tank ensures your water remains safe and pleasant to use.

3. Debris in the Tank
Leaves, twigs, dirt, and even small insects can enter a water tank through the roof or gutters. While some debris may seem harmless, it can settle over time and contribute to sludge formation at the bottom of the tank. This makes the tank harder to clean later and can clog pipes or pumps.

4. Reduced Water Flow
If you notice your taps or pumps running slower than usual, sediment or algae might be partially blocking your water system. Reduced flow isn’t just inconvenient — it can also stress your plumbing and appliances.

5. Mosquitoes or Algae Growth
Visible green water, scum on the surface, or even mosquitoes breeding in the tank are serious signs that your water needs attention. Mosquitoes carry diseases, and algae can compromise water quality.

At Old Mates Water, we specialise in professional tank cleaning and refills across the Sunshine Coast. Our team safely removes sludge and debris, inspects your tank for damage, and refills it with clean, potable water. By acting early, you can avoid larger problems and keep your water supply safe and fresh.

Regular tank maintenance doesn’t just improve water quality — it protects your family, extends the life of your tank, and ensures that your household or property is never caught without water.

‍