Nitrate and Pesticide Data for Waters of the Mid-Atlantic Region
By Scott W. Ator
Abstract
Selected water-quality data for surface-water and ground-water sites in the Mid-Atlantic Region are available in computer files. Available data include pesticide concentrations from 2,545 samples collected from 463 surface-water sites between October 1973 and March 1997; nitrate or pesticide concentrations from 1,551 samples collected from 937 ground-water sites between October 1985 and September 1996; and selected ancillary data. These data were compiled in 1997 as part of an assessment of regional conditions and are summarized in two published reports. Compiled data are useful for describing patterns of pesticide occurrence and water quality in the Mid-Atlantic States, but were collected for different purposes using many different sampling designs and techniques and do not represent a random, unbiased sampling of regional conditions.
