Construction work began Sept. 8 on a water treatment plant here that will use chloramine, instead of chlorine, to disinfect drinking water. City Councilman Marqueece Harris-Dawson said the change to chloramine — which is being made to meet federal regulations — will “ensure that residents of Green Meadows and Watts have access to the highest quality water.” Harris-Dawson took part in a groundbreaking ceremony for the $19.1 million chloramine facility — to be built at the 99th Street Water Treatment Plant in the 9800 block of Wadsworth Avenue — that will serve about 20,000 households, businesses and multi-family complexes.