
There's no universal answer to tank cleaning. How often you need to do it comes down to a handful of things: your local climate, what's growing and happening around your property, and the way you actually use your water. Once you know how these factors apply to you, it's much easier to build a maintenance routine that protects your water quality and extends the life of your tank.
The Role of Climate
Here on the Sunshine Coast, we swing between wet and dry seasons. During the wet months, downpours can flush leaves, grit, and other debris straight into your tank, while the heat of summer creates ideal conditions for algae. If you live somewhere that gets a lot of rain or your place is ringed by trees and gardens, expect to clean more often than someone in a built-up suburb.
How Your Water Use Matters
The stakes rise when your tank feeds drinking water or tops up a pool. A tank used purely for watering the garden won't demand quite the same attention, though sediment and debris will still build up over time regardless. Keep an eye on how your water looks, tastes, and smells, since these are all reliable clues.
A Rough Guide to Timing
Let the Professionals Handle It
Old Mates Water offers complete tank cleaning services to take the hassle off your plate. We clear out sediment, flush the tank thoroughly, and refill it with fresh, potable water. On top of that, we check for damage and any warning signs of contamination, so small issues get caught before they turn into expensive ones.
Sticking to a consistent cleaning schedule means Sunshine Coast homeowners can count on water that stays safe, clean, and dependable, looking after both their household and the money they've invested in their system.
Most standard tank inlets are fine for our hoses. If your inlet is unusual or hard to reach, mention it when booking so we can come prepared.
Keeping gutters clear, fitting inlet screens and first-flush diverters, and trimming overhanging branches all help reduce what gets into your tank. Even so, a periodic clean is worthwhile.
Leaves, dust, roof runoff, dead insects and general debris wash into tanks over time and settle as sludge on the bottom. Overhanging trees and open inlets speed this up. Regular cleaning keeps it under control.
Once cleaned and refilled with fresh water, your tank is ready for use. We'll let you know anything specific to your job before we leave.
We clean a range of rainwater and water storage tanks, including poly and concrete tanks. If you're unsure about your particular tank, get in touch and we'll let you know.
Cost depends on your tank's size, condition and location. Contact us with your tank details and we'll provide a quote. Where it makes sense we can combine cleaning with a water delivery to save you a second call-out.
The time varies with the size and condition of your tank and how much buildup there is. We'll give you an idea when we assess your job so you know what to expect.
We work to keep water loss to a minimum during cleaning. Where practical we can clean your tank and refill it with fresh water in the one trip, so you're not left short.
Tank cleaning generally involves removing the sludge and sediment from the bottom, which may mean lowering the water level. We aim to minimise water loss where we can, and often we can refill with fresh water in the same visit.
Common signs include discoloured water, an unpleasant taste or smell, visible sediment, or blocked outlets. If it's been several years since your last clean, it's worth having it checked.
Over time sediment, sludge and organic matter settle in the bottom of a tank, which can affect water quality, taste and smell. A clean tank helps keep your stored water fresh and safe and can extend the life of the tank.
QLD Govt recommends rainwater tanks should be cleaned every two years, though it depends on your catchment, surrounding trees and how much sediment builds up. If your water looks or tastes off, it may be time.
We remove sediment, sludge and buildup, then it's ready to refill with fresh water. Often we can clean and refill in the one visit to save you a second call-out.
Yes - we offer tank cleaning to remove sediment and buildup, helping keep your water supply clean and your tank in good condition.
We service:
Contact us to confirm delivery to your specific address.