Under-sink filters
A cartridge under the kitchen sink feeding its own tap or the mixer. Out of sight, and the simplest way to get better drinking and cooking water.
Caboolture's tap water is safe to drink, but taste, chlorine and sediment from older pipes are the reasons people ask for a filter. Caboolture Plumbing and Hot Water installs under-sink, whole-house and reverse osmosis systems, and services and replaces the cartridges in systems that are already there.



A cartridge under the kitchen sink feeding its own tap or the mixer. Out of sight, and the simplest way to get better drinking and cooking water.
A filter at the point where the water enters the house, so every tap, shower and appliance gets filtered water. Useful for sediment from old pipes.
Multi-stage filtration that removes most dissolved contaminants. The closest thing to pure water from a tap, at a higher price and with a small tank under the sink.
Cartridge changes on any brand, and honest advice on whether an older unit is worth keeping.
| Under-sink | Whole-house | Reverse osmosis | |
|---|---|---|---|
| What it treats | Taste, chlorine, sediment at one tap | Sediment and chlorine for every outlet | Dissolved solids, taste, chlorine and most contaminants at one tap |
| Where it goes | Cabinet under the kitchen sink | At the main where water enters the house | Under the kitchen sink with a small storage tank |
| Upkeep | Cartridge every 6 to 12 months | Cartridge every 6 to 12 months, sooner with sediment | Several cartridges and a membrane on a longer cycle |
| Best for | Drinking and cooking water | Homes on old pipes or wanting filtered showers | Anyone who wants the purest drinking water |
Cartridge intervals depend on water use and the water coming in. Tank water on rural blocks needs a different set-up from town water.
Town water in Caboolture and the surrounding suburbs comes from Unitywater's network. Chlorine is the taste most people want gone, and homes on older galvanised pipes see sediment as well. A whole-house sediment filter protects the taps and appliances in those homes.
Rural blocks around Wamuran, Elimbah and Woodford are often on tank water, where a sediment and UV set-up is the sensible option and a plain taste filter is not enough. We ask about the supply before recommending anything.
The filter is plumbed in properly, with an isolation valve so cartridge changes are a five-minute job.
Tell us what you want done and, for a fixture or a tank, send a photo if you can. It helps us bring the right parts.
The plumber checks the existing fitting, the pipework behind it and anything that would change the job.
You get the price before anything is removed or installed. Options are explained where there is a choice.
The work is done, tested under pressure or with water running, and the area is left as we found it.
Yes. It is treated and tested by Unitywater. A filter is about taste, chlorine and sediment, not safety, unless you are on an untreated tank supply.
Most under-sink and whole-house cartridges last six to twelve months; sediment-heavy supplies need them sooner. Reverse osmosis membranes last longer than the pre-filters in front of them.
Some systems feed the cold side of the existing mixer; others use a separate small tap on the sink. Both are options and we explain the difference before quoting.
With the owner's permission. A benchtop or inline unit that leaves no permanent change is the usual choice for a rental.
Call 1300 568 203 or book online and tell us whether you want drinking water only or the whole house.