How-to · 6 min
Reverse osmosis maintenance: filters, membrane and timeline
Pre-filters, membrane and post-carbon schedules keep RO tasting good and reducing contaminants. A practical Canadian homeowner checklist.
Looking for a lab or free test option? Find a Water Test · Not sure which system you need? Run the Water Problem Wizard for a recommended stack and installed cost ranges.
Typical schedule
- Sediment and carbon pre-filters: every 6–12 months
- RO membrane: every 2–5 years depending on feed water and usage
- Post-carbon polish: with pre-filter changes or annually
- Remineralisation cartridge: follow manufacturer guidance
Signs you are overdue
Slow faucet flow, odd taste, rising TDS on a meter, or a system that never stops making water.
DIY vs pro
Cartridge changes are homeowner-friendly on many under-sink units. Membrane swaps, leaks and tank issues are worth a service call.
Book service
Request a service/repair quote on WaterFilterHelp.ca or ask your original installer — we can match a local RO tech.