Wrekin Water stocks complete reverse osmosis (RO) systems from Pallas Viva, Spectrum, and Kinetico, alongside the replacement filter sets and membranes to keep an existing RO system performing at its best. RO systems remove dissolved solids, chemicals, and impurities that standard sediment or carbon filters can't, giving the purest drinking water available at the tap.

Multi-Stage Filtration Explained

Most RO systems in this range use 4-6 stages: sediment and carbon pre-filters protect the RO membrane from chlorine and particulate damage, the membrane itself removes dissolved solids down to a molecular level, and some systems add a final carbon polish or mineral stage for taste. Pumped systems use an electric booster pump for faster production and higher rejection rates; non-pumped systems rely on mains pressure alone.

As a UK-registered company (Company No. 11000488) rated Excellent on Trustpilot, we help you find the exact filter set or membrane your RO system needs.

58 products

Sort By

Featured
  • Sort By

Frequently asked questions

Water is forced through a semi-permeable membrane under pressure, which blocks dissolved solids, chemicals, and other impurities while letting purified water pass through. Pre-filters remove sediment and chlorine first to protect the membrane, and some systems add a final carbon polish for taste.

Pre-filters (sediment and carbon) are typically changed every 6-12 months, while the RO membrane itself usually lasts 2-3 years depending on your water quality and usage. Check your system's manual for its specific service schedule.

Pumped systems use an electric booster pump to increase pressure at the membrane, giving faster production and better rejection rates, especially useful on lower mains pressure. Non-pumped systems rely on mains pressure alone and don't need an electrical connection.

Match your system's brand and model (e.g. Pallas Viva 5T-RO, Kinetico K2/K5, Spectrum Z1-E020) to the corresponding filter set or cassette listing. If you're not sure which system you have, contact us with a photo or model number and we'll help you find the right match.

RO membranes remove the large majority of dissolved minerals along with other impurities. Some systems in this range include a final mineral or remineralisation stage to add back beneficial minerals for taste, so check the specific system's stage list if this matters to you.