Reverse osmosis.
The whole picture.

Reverse osmosis uses a membrane as part of a treatment system. Exactly what a model reduces, at what flow and under what conditions needs model-specific evidence.

It isn’t the default answer for every home. Compare it with a simpler filter against your actual requirements, including maintenance and wastewater.

• Available space. Include clearance for servicing and any tank or accessories.
• Feed conditions. Confirm pressure, temperature and the model’s water-quality limits.
• Power. Some units are powered; others rely on suitable mains pressure.
• Drainage. Account for the waste connection and the system’s operating water use.
• Upkeep. Filters, membranes, sanitising and restart procedures need a clear plan.

The plumbing supplier would review the proposed model and site, obtain the relevant documentation and follow the applicable notification and installation process before work begins.

No approval, supply arrangement or installation date is implied by this explainer. Specific RO models remain under review, and the initial supplier shortlist may change.