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- Title
Monochloramine Measurement.
- Authors
Alexander, Matthew T.; Waters, Thomas E.; Wahman, David G.; Smith, Glynda A.
- Abstract
Keywords: Disinfection Byproducts; Chlorine; Monochloramine; Disinfection Residuals; Distribution Systems; Chloramines; State Regulations; Federal Regulations; Compliance EN Disinfection Byproducts Chlorine Monochloramine Disinfection Residuals Distribution Systems Chloramines State Regulations Federal Regulations Compliance 70 71 2 10/06/21 20211001 NES 211001 GLO:KNS/01oct21:awwa1790-gra-0001.jpg PHOTO (COLOR): . gl I Layout imagery by Jaroslav74/Shutterstock.com i In the United States, the Surface Water Treatment Rule (SWTR) requires surface drinking water systems or ground drinking water systems under the direct influence of surface water to maintain a detectable distribution system residual for 95% of samples taken each month for any two consecutive months the system serves water to the public. The disinfectant residual can be in the form of free chlorine, total chlorine, combined chlorine, or chlorine dioxide. A New Method Water systems have relied on measuring chloramines using either the total chlorine I N,N i -diethyl- I p- i phenyl-enediamine (DPD) colorimetric procedure described in Standard Method 4500-Cl G or the amperometric titration procedure described in Standard Method 4500-Cl D, both of which are approved for compliance monitoring under the SWTR.
- Subjects
DRINKING water; DISINFECTION &; disinfectants; CONDUCTOMETRIC analysis
- Publication
Journal: American Water Works Association, 2021, Vol 113, Issue 8, p70
- ISSN
0003-150X
- Publication type
Article
- DOI
10.1002/awwa.1790