TDS vs COLOUR
• Colour and TDS are the highest in GT due to the suspended solid from the materials (cosmetics,soap etc).
• Colour is the lowest in pond as most of the solids have been filtered by the plants at the c-shaped tank and reeds bed.
• From the results we obtained, we can conclude that the colour is affected by Total Dissolved Solids which is coloured salts(NO3 ,chlorides etc)