LEWISTON — The city will re-start using chloramines as the regular disinfectant for drinking water after using just chlorine since June 24. Temporarily switching from chloramines to chlorine and back is a common practice and provides better disinfection of the water system. There will be no effect to the drinkability of the water.

Chloramines, a form of disinfectant produced by combining chlorine with ammonia, have been used by the Lewiston Water Division since March 2006 and have lowered byproducts in the drinking water. Prior to chloramines, the city used chlorine for primary disinfection for decades. Both chloramines and chlorine are disinfectants that destroy potentially harmful bacteria should they enter the potable water system.

As part of the switch back to chloramines, city crews will be flushing the system. As a result, residents may temporarily experience a different taste or smell to the water. Any smell of chlorine noticed within the last few weeks should cease. In addition, if peopole find their water is discolored or sediments are present, residents are asked to run their water for two to three minutes to clear it before using. However, if discoloration continues or residents have other concerns, they are asked to call 513-3003; TTY/TDD: 513-3007.