In this IoT-based real time water quality monitoring system, we have interfaced four pH, turbidity, TDS, temperature sensors, and we have interfaced two motors for inlet and outlet of samples. Every two minutes a new sample is taken and the new sample's reading is taken by the sensor and uploaded to the cloud. Every 15 seconds the sensor reading is updated to the cloud. 

Also, we interfaced an LCD to display the parameters range; whether it is in the normal range or in a higher range. And we have interfaced the LED to indicate whether the water quality parameter is in the normal range or in a higher range.

It is helpful for the people to understand whether or not the water is harmful for drinking, and they can know the water quality parameter range of the water they are using.