Signs Your RO Membrane May Be Failing: A Hyderabad Homeowner Guide
Rising output TDS, reduced production and a taste change can indicate membrane trouble, but pre-filters, pressure, settings and seals also require checks.
What the RO membrane does
The membrane is the main pressure-driven separation stage. It reduces dissolved salts and many dissolved substances, and depends on adequate pressure and proper pre-filtration.
Sign 1: Output TDS rises unexpectedly
If source conditions remain similar but output TDS rises significantly, inspect the membrane, seal, TDS controller or bypass. Repeat the measurement with a reliable meter before assuming failure.
Sign 2: Purified-water production becomes very slow
Scaling can reduce production, especially with hard or high-TDS borewell water. Blocked filters or weak pump pressure can produce the same symptom.
Sign 3: Taste changes
Unusually salty or different taste with increased output TDS may indicate declining performance. Taste alone is not proof because post-carbon filters and tank hygiene also affect flavour.
Sign 4: Too much reject water with very little purified water
Unusually high reject flow combined with very low output may indicate a pressure, flow-restrictor, valve or membrane problem.
How to extend membrane life in Hyderabad
Replace pre-filters on time, maintain feed pressure, prevent heavy sediment and consider suitable pretreatment for very hard or silty water. Monitor pre-filters during high tanker dependence.
When should the membrane actually be replaced?
Use inlet/output TDS, flow, pressure, age, source quality and service history. After replacement, verify flushing, leakage and output TDS.
Frequently Asked Questions
How long does an RO membrane last in Hyderabad?
There is no fixed life. Water quality, usage and pre-filter maintenance determine it.
Does high borewell TDS automatically mean the membrane is damaged?
No. High inlet TDS describes the source; output performance and rejection indicate membrane condition.
Can the membrane be the problem even if the filter alert is not on?
Yes. Not every purifier monitors membrane performance directly.