
When was the last time you checked — really checked — what’s inside your water tank?
Many people assume that because their rainwater tank is out of sight, it’s out of mind. But over time, sediment, sludge, leaves, and even animal droppings can build up at the bottom of your tank, affecting water quality and safety.
So, How Often Should You Clean Your Tank?
It’s a question we hear all the time!
According to NSW Health Regulations, rainwater tanks should be inspected and cleaned every 2–3 years to ensure your water stays safe and healthy. Regular cleaning not only improves the taste, smell, and clarity of your water — it also helps protect your pump and extends the life of your entire rainwater harvesting system.


What Happens If You Skip Tank Cleaning?
- Sludge build-up can clog pipes and damage your pump
- Water can develop unpleasant tastes or odours
- You risk bacterial contamination, including nasties like E.coli
- Your stored water supply might become unsafe for drinking, gardening, or livestock
Do You Have to Drain Your Tank to Clean It?
Good news: No!
At TankRight, we use a custom-built vacuum system that removes sludge and sediment from the bottom of your tank — without fully draining it. On average, only 1–2 feet of water is lost during the process, keeping most of your stored rainwater safe and usable.
Stay Safe, Stay Compliant
Whether you’re in Mudgee, Dubbo, Bathurst, Orange, or anywhere across regional NSW, keeping your rainwater tank clean is one of the simplest ways to protect your water and your health.
Need help? Our team can inspect, clean, and get your tank back to its best in no time.
For more details on the official guidelines, click here to view the NSW Health Regulations.