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Long‐term trends in nitrate concentration in Iowa water supplies
Author(s) -
McDonald Donald B.,
Splinter Roger C.
Publication year - 1982
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.1551-8833.1982.tb04960.x
Subject(s) - nitrate , environmental science , surface water , water quality , groundwater , environmental chemistry , hydrology (agriculture) , term (time) , environmental engineering , water resource management , chemistry , geology , ecology , physics , geotechnical engineering , organic chemistry , quantum mechanics , biology
Long‐term water quality studies of surface waters and groundwaters in Iowa have shown increases in nitrate concentrations in surface supplies and shallow wells. Nitrate concentrations in deeper wells have remained low and have exhibited no appreciable increases since 1950. The application of nitrogenous fertilizers to agricultural land appears to be the primary source of nitrates in water supplies.