Tank water, explained.

Most rainwater tanks should be inspected annually and cleaned when sediment, odour, colour, bacteria risk, or maintenance history suggests it is needed. Homes surrounded by trees, wildlife or heavy leaf litter — common across the Sunshine Coast hinterland — typically need attention more often.

UV sterilisation is a strong consideration for tank water homes, especially where the water is used for drinking or showers. UV provides microbiological protection when correctly installed alongside pre-filtration and serviced annually. It is not a replacement for tank cleaning, filtration or catchment maintenance.

Filtration improves clarity, taste, odour and sediment — but on its own does not guarantee microbiological safety. A whole-system approach (tank, catchment, filtration, UV and pipework) gives you the best chance of consistently good water quality, confirmed through appropriate testing.

Common causes include sediment build-up, organic matter, dead animals in catchments, biofilm in older pipework, or under-serviced filters. An inspection of the tank, catchment, filtration and UV system usually identifies the cause quickly.

Sediment is the layer of fine particles — dust, leaf matter, roof debris and biological material — that settles at the bottom of a rainwater tank over time. Periodic removal supports better water quality and helps filtration and UV equipment perform as intended.

In many cases, yes. Our cleaning approach uses sludge vacuuming and targeted sediment removal which often allows the tank to remain in service with minimal water loss. We will tell you up front if your tank needs a fuller drain-down.

BioCleanse is a whole-home pipework disinfection treatment that helps reduce biofilm risk inside household plumbing. It is a supplementary treatment — recommended as part of a whole-system assessment, not as a replacement for UV, filtration or tank cleaning.

No. BioCleanse addresses pipework biofilm risk, while UV provides ongoing microbiological protection of water moving through the system. They are designed to work alongside each other, with appropriate filtration and tank maintenance.