Application - Drinking Water Chemistries - Disinfection

Parameter	Purpose of Test	Method
Chlorine , Free	Data used to control Chlorine based disinfection processes, required for reporting at POE and in the distribution system, also used in monitoring in the distribution system during flushing and line break maintenance. EPA Primary DW Standard at 4.0 mg/L as CL₂.	8021 10231
Chlorine, Total	Data used to control Chlorine based disinfection processes, required for reporting at POE and in the distribution system, also used in monitoring in the distribution system during flushing and line break maintenance. EPA Primary DW Standard at 4.0 mg/L as CL₂.	8167 10070 10232
Chloramine, Free Ammonia	Data used to optimize formation of monochloramine and minimize level of free ammonia during chloramination process and monitor free ammonia levels in the distribution system to determine the potential for nitrification (applicable to surface water facilities and booster stations of chloraminated water systems).	10171 10172 10200 10201

Parameter	Purpose of Test	Method
THM/THMFP	Form as unwanted disinfection by-products when organic matter reacts with chlorine (or bromine). Current EPA regulations allow no more than 80 ppb of total THMs in drinking water supplies.	10224
Ozone	Control disinfection processes/in-package disinfection Ozone is often used in place of chlorine, to avoid taste issues, etc.	8311