An iron problem is characterized by the red-brown staining of bathroom fixtures and laundry.
An iron problem is characterized by the red-brown staining of bathroom fixtures and laundry. In well water, iron usually occurs in its ferrous state. The water is clear when drawn but once exposed to air the iron changes into a ferric (oxidized) state. The water turns red and forms insoluble “rust” particles. Staining can be caused by as little as 0.3 milligrams per liter (mg/L). Depending on the iron concentration there are several solutions to this aggravating water problem.
Often an iron problem is the direct result of an infestation of iron bacteria. Although these bacteria do not present a health hazard, they stain fixtures, can clog pipes and valves, and make the water unpalatable. An option to consider first is shock chlorination. Shock chlorination is the direct treatment of a well and water system with 15 to 20 L of chlorine bleach. This strong chlorine solution is held in the well and water system for at least eight hours before being flushed out. Shock chlorination won’t solve the problem permanently, but it may keep the bacteria in check.
Continuous chlorination of the well, using liquid chlorine, is another option. This treatment may be needed when iron bacteria cannot be effectively controlled by shock chlorination. Many areas of Fort Bend, Brazoria, and Wharton counties have Bacterial iron issues.
While there can be several reasons for discolored water, the most common cause in our region is oxidized iron. This can occur naturally on private wells, but also occurs on municipal water supplies. Chlorination and flushing of lines can exacerbate the problem. Common complaints include yellow or brown water, odd smells, and unfavorable tasting water.