Iron bacteria , which live on iron in the water and eventually harden into scale. Install a chlorinator to feed into the well near the pump intake and an activated carbon filter to remove excess chlorine and other objectionable tastes or odors. Corroding water pipes . Water dripping from corroded iron or galvanized pipe has a rusty color. Corroded copper or brass pipes cause blue-green stains on plumbing fixtures.
Water has a metallic taste.
Depending on the acidity level, use appropriate treatment such as aeration, soda ash feeder, or neutralizing filter. Rotten egg odor from both hot and cold water pipes. Copper and silver turn black in the water. Iron, steel, or copper parts of pumps, pipes, and fixtures corroded. Black stains on laundry and porcelain.