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“First Draw” on Lead and Copper Rule Revisions
Author(s) -
Pontius Fred
Publication year - 2007
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/j.1551-8833.2007.tb08103.x
Subject(s) - chloramine , lead (geology) , pollution , environmental science , copper , corrosion , disinfectant , water pollution , environmental chemistry , environmental protection , environmental engineering , chemistry , chlorine , geology , ecology , organic chemistry , geomorphology , biology
After several years of intense review, the U.S. Environmental Protection Agency (USEPA) has adopted revisions to the Lead and Copper Rule (LCR: USEPA, 2007). The article discusses the original LCR, promulgated in 1991, and how in 2002 the District of Columbia Water and Sewer Authority's (WASA's) drinking water exceeded the lead action level, thus initiating review of the original LCR. Sources of the lead pollution are discussed, along with changes in water chemistry from the treatment taken to clean up the lead pollution, the concern over the possible role of chloramines as a secondary disinfectant in lead release, corrosion of lead and copper pipe, and the addition of chemicals to the finished water to inhibit corrosion. Specifics of the 2007 LCR revisions are provided.