Be sure to compare the maximum iron levels recommended by the softener manufacturer with the amount of iron in your water before you purchase a unit. Oxidizing filters contain a special media or sand which must be treated occasionally with potassium permanganate to maintain iron removal capability. An alternate water supply, if available, is often cheaper than treatment. A reddish-brown, slimy coating in plumbing system, especially below the water line in the toilet tank. Slimy growth on well screen and pump intakes that may reduce well capacity.
Water looses lots of pressure through water softener because of slime on the media bed.
Stains on laundry from globs of bacteria that break loose from plumbing. Bad smells from decaying bacteria. Do a shock chlorination treatment. Place a high concentration of chlorine bleach in well and plumbing system to kill iron bacteria. Be prepared to repeat the treatment from time to time.