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Reverse osmosis is one of the most widely used technologies for water treatment in homes, industries, and production plants. Its ability to remove dissolved salts, heavy metals, microorganisms, and chemical contaminants makes it an effective solution for obtaining purified water. However, like any system, it can experience failures. Knowing how to identify problems in your reverse osmosis system is key to avoiding interruptions, maintaining efficiency, and protecting water quality.

1. Low water flow

2. “Why is my reverse osmosis system producing little water?” This is usually caused by clogged filters, low feed water pressure, dirty membranes, or issues in the storage tank. Check the inlet pressure (ideally between 40 and 100 psi) and replace filters according to the manufacturer's recommendations.

3. Water with bad taste or odor

4. If the treated water tastes salty, chemical, or metallic, it may indicate that the semipermeable membrane is deteriorated or that the carbon filters are saturated. It could also be due to cross-contamination or insufficient system cleaning. A TDS (Total Dissolved Solids) test can help diagnose the problem.

5. Increase in water conductivity

6. The electrical conductivity of purified water should be low. If you notice an increase, it may indicate that salt rejection has decreased, which happens when the membrane loses efficiency. A TDS reading above 50 ppm in a residential system signals urgent maintenance is needed.

7. Excessive wastewater

8. Excessive wastewater discharge may indicate that the flow restrictor valve is damaged or improperly calibrated. This part is crucial to maintain the balance between purified water and wastewater.

9. Unusual noises or leaks

10. Loud noises in the pump, vibrations, or water leaks are clear signs of mechanical problems. These can be caused by loose connections, faulty valves, or worn-out pumps.

Conclusion

Monitoring parameters such as pressure, TDS, flow rate, and pH will allow you to detect any anomalies early. Reverse osmosis is a reliable technology but requires periodic maintenance and attention to early signs of failure to ensure safe and high-quality water.