Publication Summary

Twenty-seven wells were sampled for 74 pesticides and pesticide residues near Gleed, Washington. Gleed is located about five miles northwest of Yakima, Washington. The study area is underlain by a shallow alluvial aquifer and the predominant land use is fruit orchards.

Twenty-seven wells were sampled for 74 pesticides and pesticide residues near Gleed, Washington, Gleed is located about five miles northwest of Yakima, Washington. The study area is underlain by a shallow alluvial aquifer and the predominant land use is fruit orchards.

Five wells showed low concentrations of total xylenes (estimated to range between 0.2 to 0.9 mg/L) and one well showed one detection of DCPAs (dacthal and metabolites) at a concentration of 0.88 mg/L. The xylene detections are not necessarily related to pesticide use. Arsenic was detected in 13 wells at concentrations that ranged from an estimated 1.5 to 5.4 mg/L. All arsenic detections exceeded the Washington State ground water quality standards criterion. None of the observed concentrations for target analytes exceeded drinking water standards for public systems. Nitrate+nitrite-N was detected in all of the wells at concentrations ranging from 0.7 to 4.2 mg/L and a mean concentration of 2.9 mg/L.

Link to EIM data for User Study ID GLEED