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The Role of Sediment Filters in Clean Water Systems
Ever turned on the tap and caught a whiff of something odd? Or maybe your “clear” water looks more beige than it should? If so, you’re not imagining it, and you’re definitely not the only one.
While we often focus on high-tech filtration for taste or chemicals, sediment filtration is the unglamorous first line of defence in a clean water system. Its job? Catch the bits you can see—dirt, rust, grit—before they clog up the filters that handle everything else.
What is a Sediment Filter?
A sediment filter is exactly what it sounds like: a physical barrier that traps solid particles before they reach your taps, your appliances, or more sensitive filters. Think of it as a pre-screen that stops the grit so everything downstream works better, longer, and cleaner.
It doesn’t change taste or kill bacteria, but it keeps the chunky stuff out of the picture.
What is Sediment?
In water, sediment refers to any solid material suspended in the flow. That could mean:
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Sand or silt from bore or dam water
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Rust flakes from old pipes or tanks
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Organic matter like plant debris
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Fine dirt or clay particles after heavy rain
Even if your water looks clean, these particles can wear down your system over time and clog filters faster than you’d think.
What Does a Sediment Filter Do?
So, what does a sediment filter do exactly? In simple terms, it catches the big stuff. As water flows through the filter, particles larger than the filter’s “micron rating” are blocked and trapped. That means cleaner water flows forward and your more delicate filters (like carbon or reverse osmosis membranes) don’t get overwhelmed. It's a small job with a big impact, kind of like a doormat for your plumbing!
What Are Sediment Filters Used For?
You’ll find sediment filters used in all sorts of everyday situations. They're often the first stage in drinking water systems, under-sink units, whole-house filtration setups, and even in caravans or off-grid homes.
They’re especially useful in properties using tank, bore, or dam water, where sediment levels are naturally higher. But even mains water can carry rust and debris, particularly if the plumbing is older or shared across multiple properties.
Reverse Osmosis Systems
In an RO setup, a sediment filter for the RO system is critical. It protects the delicate membrane by catching larger particles that would otherwise cause damage or clogging.
Browse RO systems and RO cartridges
Carbon Filter Systems
Carbon filters target chlorine, taste, and odour, but they’re not built to handle grit. A sediment filter keeps them clean, so they can do their job properly.
UV Filter Systems
UV light can’t disinfect what it can’t see. If sediment clouds the water, the UV system becomes less effective. A sediment filter ensures the light reaches everything it needs to.
Whole of House Water Systems
For whole-house systems, sediment filters offer protection across everything: showers, dishwashers, washing machines, and tap outlets. They catch the gunk before it travels far.
Explore whole-house filters and cartridges
Fluoride Water Filter Systems
Fluoride filters are designed for precision. If you’re filtering fluoride, your system will thank you for starting with sediment removal. It helps keep the flow consistent and protects the more advanced filters.
See fluoride filters and fluoride cartridges
What Are Sediment Filter Cartridges?
A sediment filter cartridge is the replaceable core of the filtration unit. It’s where all the captured debris ends up, and it’s what you’ll change out when the filter is full or losing flow.
Cartridges come in various materials; some are tightly spun, others pleated. The best choice depends on your water source and how often you want to replace it. You’ll also want to match the size and type to your system.
See all Aquasafe sediment filter cartridges
How Many Microns Should My Sediment Water Filter Be?
If you’re wondering how many microns for water filter use is right, it depends on what you’re trying to block. Microns are a unit of measurement, and they describe the size of the particles a filter can catch. To give some perspective, a human hair is about 70 microns wide.
For homes using bore or tank water, a 20- or 50-micron filter is usually good for the first stage. If you're dealing with finer sediment or want to protect an RO system, you might opt for 5 microns or even 1 micron. Just keep in mind that finer filtration = slower flow.
When to Replace Your Water Filter
Like any part of a water system, sediment filters don’t last forever. Most should be changed every 3 to 12 months, depending on your water quality and how much you use.
Signs that your sediment filter needs replacing include reduced water pressure, odd-tasting water, or visible discolouration. If left too long, buildup can cause blockages or make your system less effective, which can lead to other filters wearing out faster.
It’s a quick change that makes a big difference.
Shop Sediment Filters at Aquasafe Today!
The first step to clean, reliable water is keeping the grit out of the system. A quality sediment filter helps prevent build-up, protects your plumbing, and makes sure your other filters can do their job without being overloaded.
If you’re building or upgrading your clean water system, explore Aquasafe’s sediment filter cartridges, and give your water a smoother start from the very first stage.
