Mono-chloramine is a compound that uses both chlorine and ammonia. This disinfectant is used so that the chlorine does not react with certain organic material that occurs naturally in almost all ground water. The Village also temporarily changes the disinfection treatment procedure to free chlorine once a year. This conversion to chlorine allows us to perform a water distribution system purge as recommended by the Department of Environmental Protection. During this period, customers may experience a slight increase in the taste and odor of chlorine.