The U.S. Environmental Protection Agency (EPA) has prepared this Health Effects Support Document for Fonofos to support a determination regarding whether to regulate fonofos with a National Primary Drinking Water Regulation (NPDWR). The available data on occurrence, exposure, and other risk considerations suggest that, because fonofos does not occur in public water systems at frequencies and levels of public health concern, regulating fonofos will not present a meaningful opportunity to reduce health risk. EPA will present a determination and further analysis in the Federal Register Notice covering the CCL proposals. Fonofos is an organophosphate used as a soil insecticide against insect pests on a variety of agricultural crops, vegetables, and fruits. It is a clear, light yellow liquid with an aromatic odor. Production of fonofos was cancelled on May 6, 1998 (63 Federal Register (FR) 25033), with an effective date of November 2, 1998, plus a one-year grace period to permit the exhaustion of existing stocks before the end of 1999.

Title from title screen (viewed Oct 6, 2008). "January 2008." "EPA-822-R-08-009." Includes bibliographical references.

Executive summary -- Identity: chemical and physical properties -- Uses and environmental fate -- Exposure from drinking water -- Exposure from media other than water -- Toxicokinetics -- Hazard identification -- Dose-response assessment -- Regulatory determination and characterization of risk from drinking water.