I have colour in my water causing a low UVT, how do I remove it?
If you have high colour in your water it is most likely a concentration of tannins. High tannin levels are found in most surface water supplies and some groundwater or simply in waters where large quantities of vegetation have decayed. Unfortunately tannins cannot simply be removed from water by a physical means of filtration. Tannins can be described as a colloidal suspension as it carries a negative charge and therefore will not simply fall out of solution like turbidity does. Tannins are water soluble, organic compounds formed in the decomposition of organics. It can cause a slight yellowish color to the water and will rapidly decrease the level of UVT in your water as the tannin level increases. The most efficient way to remove tannins from drinking water is by way of an anion exchange system. Hardness is removed from water via a cation exchange system or softener, as the hardness compounds need to be exchanged with sodium ions in order for the hardness to be removed. Tannin remova
