Application - Drinking Water Chemistries - Disinfection

Most Frequently Asked Questions  


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

Also Consider  


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