Development of a low-cost multi-parameter system that measures pH, turbidity, and temperature in water, suggesting new possibilities for environmental monitoring.
Monitoring and testing of different water parameters play a vital role in water safety. The traditional analytical instruments of water testing are labor-intensive, require trained staff, and are difficult to operate in the field, owing to their non-portability. Considering these issues, the present work reports the development of an Internet of Things (IoT) enabled low-cost multi-parameter water testing system. The proposed system can measure the turbidity, pH, temperature, and conductivity properties of water samples. The proposed system was developed around a low-cost Arduino UNO R3 microcontroller. The system was designed in such a way that it can operate on a 12V rechargeable battery. Therefore, the system can be moved to the field, and important water parameters can be measured. The total cost of the entire system was comparatively low, suggesting the proposed system can be used by economically weak communities. The system was tested with real water samples, and the results are compared with commercial water parameters testing systems. The results of the proposed system are well in agreement with the commercial systems, suggesting its effectiveness for on and off-field water analysis of resource-limited areas.
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Sawant et al. (2025) studied this question.