Norwood: Total trihalomethanes and haloacetic acids well below requirements From The Norwood Post (Ellen Metrick): When measured at the end of last month, the TTHMs were at 44.7 ppb, and the HAA5s were at 27.7, both far below the set standard for the first time. More water treatment coverage here. Share this: Share on Bluesky (Opens in new window) Bluesky Share on LinkedIn (Opens in new window) LinkedIn Share on Facebook (Opens in new window) Facebook Email a link to a friend (Opens in new window) Email Print (Opens in new window) Print Share on X (Opens in new window) X Like this:Like Loading...