[khalil]

Hi everyone

I would like to design a system that allows to judge the potability of water after having made a certain number of measurements with the available sensors such as the PH sensor, turbidity, temperature, TDS meter...

after some research I found that there are 8 essetial parameters that once respected their values we can say that the water is 100% drinkable. The settings are:

- pH (PH sensor)
- Turbidity (turbidity sensor)
- Color
- Conductivity
- Total dissolved solids (TDS metre)
- Hardness
- Temperature (temperature sensor)
- chlorine (Redox sensor

So I told myself that we have to get sensors for each parameter and with arduino we will be able to know the good results.

Am I thinking right? I exaggerated at the level of many parameters? do I have to add others or eliminate some of them?

[chenbeier]

The problem with drinking water is that also organic material, bugs, bacteria, etc. has an influence, so you need also COD measurement. But at the end its still a risk.

[wildfyr]

Many many dangerous compounds would not be detected by this. For instance, sodium azide. Or Clostridium botulinum bacteria. Or radioactive iodine.

[Borek]

- chlorine (Redox sensor

You will mostly detect dissolved oxygen, as chlorine is rarely present.

[Melissa]

In my opinion, you should add the determination of trace metals.