What is causing my water to be yellow or green?
A.Some of our wells are in an aquifer that contains tannins or tannic acid. These tannins come from vegetation. As the surface waters filters down to the aquifer, the water adsorbs the tannins that are present causing the water to have a yellow/green tint to it. Tannins are found in some foods such as grapes, persimmons, blueberries, tea, and chocolate. Q.
