A post-filter is usually the final polishing stage after storage, helping improve the taste of RO drinking water before it reaches the faucet.
Filter page options
Use these pages to move from general filter questions to the exact filter, membrane, service, or upgrade page.
Post-filters are commonly placed after the RO storage tank and before the dispensing faucet.
Open pageThe post-filter supports a clean, fresh final taste for drinking water.
Open pageA post-filter is still a maintenance item and should be changed on schedule with the system.
Open pageRelated filter service
Filter and membrane pages should connect customers back to replacement service, RO system maintenance, system comparison, and contact instead of making them guess which part they need.
Water Fixers maintenance
Water Fixers can help customers stay on schedule with RO filter changes, membrane changes, and system maintenance reminders.
Routine filters are commonly changed every year or sooner depending on the system and water conditions.
The RO membrane is typically a multi-year service item and should be tracked separately from routine filters.
Maintenance also includes leak review, flow review, pressure/tank review, faucet performance, and whether an upgrade is needed.