Specialist treatment · Under-sink or plumbed system
Reverse-osmosis system
A membrane process that removes many dissolved solids but produces wastewater, reduces pressure, and changes the water's mineral content.
Back to finderWhat it may fit
- a specialist treatment need supported by water-quality evidence
Key attributes
- primary job
- specialist-treatment
- installation
- under-sink
- no professional installation
- false
What to check or avoid
- Choosing reverse osmosis as a default health-protection purchase
- Ignoring wastewater, pressure, remineralisation, servicing, and notification requirements
Safety note
Use only for a defined need with professional advice, check notification and installation requirements, and understand how drinking water will be managed after treatment.
Evidence note
What the signal means here
The Drinking Water Inspectorate describes reverse osmosis as specialist, expensive, and generally not feasible for most domestic public-supply use.
Sources and further reading
- Domestic water filters and softeners — Drinking Water Inspectorate Checked 2026-08-31