For your safety, read label and accompanying MSDS before using.
Sulfide occurs in many well water supplies and sometimes is formed in lakes or surface waters.
In distribution systems, it may be formed as a result of bacterial action on organic matter under anaerobic conditions. It may also be found in waters receiving sewage or industrial wastes. For example, solutions used in the treatment of wood pulp in paper manufacturing may contain large amounts of sulfite, which is reduced to sulfide. Lake muds rich in sulfates produce hydrogen sulfide during periods of very low oxygen levels that result from summer stagnation. Removal of sulfide odor is accomplished by aeration or chlorination.