“…Further, a pH increase from 7.0 to 9.0 increased the THM yield but reduced the formation of HAAs, HAL, CH, HK, HAN, and TCNM. 34,42,65 Hydrolytic decomposition of unstable DBPs (e.g., 1,1,1-TCP, CH, and DCAN) has higher rates at basic pH. 69 Furthermore, THM can be formed by the hydrolysis of 1,1,1-TCP, CH, and TCAA which explains why THMs typically increase at basic pH.…”