Premium
Persistent Pockets of Low Chlorine Residual in New York City's Drinking Water Distribution System: A Case Study
Author(s) -
Savane Ousmane Sy,
Khan Eakalak,
Freud Salome,
Murphy Amy,
Tesfargiogis Kibre,
Murray Virginia
Publication year - 2019
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/awwa.1379
Subject(s) - chlorine , residual , flushing , environmental science , distribution (mathematics) , environmental engineering , environmental chemistry , chemistry , materials science , metallurgy , mathematics , biology , algorithm , endocrinology , mathematical analysis
Key Takeaways Pockets of low chlorine residual have been found in New York City's water distribution system, with fluctuating water demand resulting from the seasonal operation of local institutions. Variations of the chlorine residual profiles in one such pocket were found through both field and laboratory investigations. Once the cast‐iron pipe was replaced with ductile‐iron pipe in the study area, an acceptable chlorine residual was usually maintained; when low chlorine residuals were observed, low‐velocity flushing remediated the situation.