Point-of-use purification
Reverse osmosis drinking water, right at your kitchen sink
Our most thorough filtration, in a unit that fits under the sink. Pre-filters, a semi-permeable membrane and a remineralisation stage feed purified water to its own tap on the bench.
What makes RO different
It goes after what ordinary filters let through
Sediment and carbon filters trap particles and chemicals suspended in the water. Things that are fully dissolved pass straight through them, like salts, fluoride, nitrates and most PFAS compounds.
Reverse osmosis works differently. Water is pushed through a membrane with pores of about 0.0005 micron. Clean water passes through and the dissolved contaminants are flushed down the drain. The membrane also takes out the minerals that give water its taste, so every Pure Forge unit finishes with a remineralisation cartridge that adds back trace calcium and magnesium.
Talk to us about RO
The four stages
What happens between the mains and your glass
Pre-filtration
Sediment and carbon cartridges take out grit and chlorine. Chlorine damages RO membranes, so this stage protects the most important part.
Membrane
Water is forced through the membrane under pressure. Dissolved contaminants are rejected and rinsed away to drain.
Remineralisation
A post-filter puts small amounts of calcium and magnesium back in, balancing the water and its taste.
Storage and tap
Purified water waits in a sealed tank under the sink, ready on demand from a dedicated tap.
Built for everyday use
Small enough for a unit, strong enough for a busy family
- Storage tank sized to keep up with the kitchen
- Leak detection with automatic shut-off inside the cabinet
- Quick-change cartridges that twist out without tools
- Tap finishes to suit common sink mixers
- WaterMark certified, NSF-rated media, ISO 9001 manufacture
We set the system's pressure during commissioning so it sends as little water to drain as practical. Modern membranes waste far less than older RO units did.
Side by side
Reverse osmosis versus a tap or jug filter
| Pure Forge RO | Tap or jug filter | |
|---|---|---|
| Filtration level | ~0.0005 micron membrane | 1 to 5 micron |
| Dissolved salts and fluoride | Substantially reduced | Not reduced |
| PFAS and heavy metals | Substantially reduced | Partly, at best |
| Chlorine | Removed in pre-filtration | Reduced |
| Remineralisation | Included | No |
| Own tap and storage | Yes | No |
| Installation | Licensed, included | DIY |
Choosing a unit
Matched to your cupboard and your household
We confirm the right unit at your water test, based on cabinet space, incoming pressure and how much drinking water you go through.
Apartments and rentals
Slimline units for tight cupboards, installed so they can be removed cleanly and taken with you when you move.
Family kitchens
Larger storage and faster refill for homes filling drink bottles, jugs and saucepans all day.
Tank, bore and high-demand homes
Higher-capacity set-ups for elevated dissolved solids, or for a fridge and ice-maker plumbed in.
FAQ
Reverse osmosis questions
What does reverse osmosis remove?
Dissolved contaminants that standard filters miss: salts, fluoride, nitrates, heavy metals such as lead and copper, PFAS compounds and pesticide residues. The pre-filters also take out chlorine and sediment.
Does it take out the good minerals?
The membrane can't tell good from bad, so yes. That is why every unit we fit includes a remineralisation stage to add trace calcium and magnesium back.
Can I put one in a rental?
Usually, with the owner's permission. We install it so it can be removed and the cupboard left as it was, and the unit can be refitted at your next place.
How often is maintenance needed?
Pre- and post-filters every 6 to 12 months. The membrane usually lasts 2 to 4 years depending on your water. We keep track and remind you.
Do I need a whole house system as well?
Not necessarily. They do different jobs. RO purifies drinking and cooking water at one tap. A whole house system looks after showers, laundry and appliances. Plenty of homes run both.
Treat the whole home
Whole house filtration
Take chlorine and sediment out of every shower, tap and appliance, not just the kitchen.
Whole house filtrationDue for a change?
RO filter and membrane replacements
We match cartridges to your unit and can fit them for you.
Filter replacementsPurified drinking water from your own tap
Book a free water test and we'll check your supply, measure your cupboard and recommend the right unit.