5 Signs Your RO Membrane or Filter Needs Replacement
Slow flow, odd taste, a constantly running drain and more — the common signs it is time to change your purifier's filters or membrane.
1. Water flow has slowed down
A clogged sediment filter or a scaled RO membrane reduces flow. If filling a glass takes noticeably longer than before, the filters are a likely cause.
2. Water tastes or smells unusual
A used-up carbon filter can no longer remove odours and tastes. A bitter, salty or musty taste is a clear sign to get the purifier checked.
3. The drain keeps running
If reject water flows continuously even when the tank is full, a valve or the membrane may need attention. This also wastes water.
4. TDS reading has gone up
A rising TDS reading in purified water usually means the RO membrane is no longer filtering effectively.
5. Unusual noise from the pump
A pump straining against blocked filters can become noisy and may wear out sooner. Changing pre-filters on time helps protect the pump and membrane.
Key takeaways
- Slow flow and odd taste are the most common warning signs.
- A continuously running drain wastes water and needs checking.
- Use genuine replacement parts for reliable performance.
Sources
- US EPA — Home drinking water filtration — how home filters and RO systems work and why maintenance matters
- WHO — Total dissolved solids in drinking-water — background on TDS and taste