Why did the Champlain Water District switch to monochloramine?
The Champlain Water District switched to monochloramine to reduce regulated disinfection products and maintain a disinfectant residual within the distribution system. Monochloramine disinfection is one way to comply with new and stricter standards under the EPA’s Safe Drinking Water Act. Use of monochloramine reduces the production of harmful disinfection byproducts such as trihalomethanes (THMs) and haloacetic acids (HAAs), which result from the combination of free chlorine with organic material found in surface water.