Undersink Water Filters
Enjoy fresh, clean water straight from your kitchen tap with our range of undersink water filtration systems. Designed for easy installation below your sink, these filters provide improved taste and reduced contaminants without taking up valuable bench space. Ideal for homes and offices, undersink water filters help remove chlorine, sediment, and other impurities, delivering safer, better-tasting water. With simple maintenance and long-lasting cartridges, you can trust in reliable performance and year-round convenience. Discover the right undersink water filter for your needs and experience the benefits of filtered water every day.
Real-World Advice: Undersink Flow Rates
The biggest complaint plumbers hear after installing an undersink filter is, "The water comes out too slow!" This happens because people buy a 0.1-micron filter (which is highly restrictive) and run it on a standard kitchen mixer tap. If you want ultra-fine filtration, you must use a dedicated, small filter faucet (included in most kits) so the pressure feels normal. If you want to filter all the cold water going to your main kitchen mixer tap, you must buy a "Hi-Flow" system designed for that specific purpose.
Compare Undersink Technologies
| Technology | Water Source | Primary Target | Output |
|---|---|---|---|
| Standard Inline (1 to 5 Micron) | Town Mains | Chlorine, taste, odour | Good flow, simple maintenance |
| Harsh Water (0.1 Micron) | Town Mains | Cysts, Giardia, heavy sediment | Requires dedicated small tap |
| Reverse Osmosis (RO) | Any | Fluoride, heavy metals, total purification | Slow flow (requires storage tank) |
| Ultraviolet (UV) | Rainwater / Bore | Bacteria, viruses, E. coli | Flow depends on pre-filters |
Actionable Guide: Rainwater Requires UV
If you are running your kitchen sink off a rainwater tank, a standard carbon filter is dangerous. Carbon removes the bad taste, giving you the illusion the water is clean, while invisible bacteria (from bird droppings on the roof) pass right through. If your undersink system is for tank water, you must choose a system equipped with Ultraviolet (UV) light to sterilize the microorganisms.
Frequently Asked Questions
Do I need reverse osmosis, or is a standard filter enough?
For 90% of town water users, a standard carbon undersink filter is perfect for removing chlorine and making the water taste great. You only need Reverse Osmosis if you specifically want to remove dissolved solids, heavy metals, or municipal fluoride.
Are undersink filters hard to install?
Most kits are designed for straightforward installation using basic tools. However, they require you to tap into the cold water line under the sink and drill a hole in your benchtop for the faucet. If you are not confident, a plumber can do this in under an hour.