Microbiologically Induced Corrosion (MIC, commonly known as sulfide corrosion) is a very serious problem in sewers and wastewater treatment plants (WWTP). The service life of concrete structures suffering MIC is often less than 10 years. As an example of the scope of MIC, the US Environmental Association reported that over 2,750 km of concrete sewer systems needed replacement due to MIC in the Greater Houston Area in 1992.