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Evaluation of THM Precursor Contributions From Agricultural Drains
Author(s) -
Amy Gary L.,
Thompson Jill M.,
Tan Lo,
Davis Marshall K.,
Krasner Stuart W.
Publication year - 1990
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.1551-8833.1990.tb06906.x
Subject(s) - tributary , trihalomethane , environmental science , dissolved organic carbon , delta , soil water , irrigation , organic matter , peat , hydrology (agriculture) , water quality , drainage , aqueduct , total organic carbon , environmental chemistry , environmental engineering , water treatment , chemistry , agronomy , geology , geography , ecology , soil science , archaeology , engineering , cartography , geotechnical engineering , organic chemistry , aerospace engineering , biology
More than 200 agricultural drains in the Sacramento River Delta contribute significant levels of trihalomethane (THM) precursors to California State Project water. It has been hypothesized that these drains, associated with crop irrigation involving highly organic peat soils, are probably responsible for the higher levels of dissolved organic carbon and THM formation potential in the California Aqueduct emanating from the delta in comparison with the principal freshwater tributaries entering the delta. The purpose of this study was to evaluate this hypothesis. It was found that the dissolved organic matter from drains is characterized by a higher molecular weight and greater THM reactivity than that found in delta tributaries.