Ferric iron is the most common cause of yellow or orange well water. If your water has a yellow tint and a metallic taste, iron is the likely culprit.
Tannins are natural organic materials that give water a tea-like color. These materials get into water as it flows through decaying vegetation and peaty soils.
Yellow water in your well might not be caused by contaminants in your water supply, but by impurities from rusty pipes and water lines.
Old pipes may begin to corrode, and the force of the water flow through the pipes may cause bits of rust and metal to break off and enter the water.
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