What does THM in water mean in practice?
Their concentration depends on the number of precursors, chlorine dose and contact time, temperature and pH.
When does it matter?
THM is not assessed by the odor of chlorine; targeted laboratory testing of individual compounds is needed.
Which solutions are related to it?
Precursors are limited before disinfection, chlorination is optimized and activated carbon or membrane processes are used at the end.