No single schedule fits every tank; cleaning frequency depends on the tank type, location, water source and usage. But there are general guidelines and clear signs to help you decide.
General suggested frequency
As a general rule, a home water tank should be cleaned once or twice a year, noting that underground tanks may need more attention due to soil proximity and dust ingress. An uncovered or poorly sealed tank may need a higher frequency.
Signs the tank needs cleaning
Don't wait for the scheduled date if you notice:
- Discoloured or cloudy water
- An unusual smell in the water
- Sediment or particles when opening a tap
- A slimy layer or algae inside the tank when opening the lid
- Reduced water pressure from sediment build-up at outlets
Factors affecting frequency
Cleaning needs increase with tanker-supplied water, after network maintenance, after long interruptions where water stagnated, or in dusty areas. Needs decrease with a tightly sealed tank and a stable mains supply.
Cleaning, disinfection and waterproofing
Cleaning removes sediment and dirt; disinfection is an extra step with dedicated products offered on request; waterproofing protects tank walls and is done when needed after assessment. If you notice cracks or leaks, repair comes before cleaning.
This is general information, not a diagnosis of your home. To identify the cause, contact us to arrange an assessment.
Frequently asked questions
Is cleaning the overhead tank as important as the underground one?
Yes; the overhead tank feeds taps directly in many homes, and its exposure to heat and dust makes regular attention just as necessary.
Is cleaning without disinfection enough?
Cleaning removes visible sediment and dirt. Disinfection is an extra step with dedicated products, offered on request, and is advised especially after water stagnation or visible contamination.