EXTOXNET:  http://ace.orst.edu/info/extoxnet/
The EXTOXNET website is a source of objective, science-based information about pesticides - written for the non-expert.
EXTOXNET provides a variety of information about pesticides including: Pesticide Information Profiles (PIPs); Toxicology Information Briefs (TIBs); Toxicology Issues of Concern (TICs); Factsheets; News about Toxicology Issues; Newsletters; Resources for Toxicology Information; and Technical Information.

National Pesticide Telecommunications Network (NPTN):  http://ace.orst.edu/info/nptn/
NPTN is a toll-free telephone service that provides pesticide information to any caller in the United States, Puerto Rico, or the Virgin Islands and operates 6:30 a.m. to 4:30 p.m. Pacific time, 7 days a week, excluding holidays. Phone: 1-800-858-7378; FAX: 1-541-737-0761; Email: nptn@ace.orst.edu.

Agricultural and Environmental News:  http://www2.tricity.wsu.edu/aenews
Cooperative Extension Washington State University monthly newsletter, contains many articles on pesticides and related environmental issues.

MMWR (Morbidity and Mortality Weekly Report): http://www.cdc.gov/epo/mmwr/mmwr_wk.html

California Department of Pesticide Regulation (DPR):  http://www.cdpr.ca.gov/
DPR has primary responsibility for regulating all aspects of pesticide sales and use to protect public health and the environment. The Department's mission is to evaluate and mitigate impacts of pesticide use, maintain the safety of the pesticide work place, ensure product effectiveness, and encourage the development and use of reduced-risk pest control practices while recognizing the need for pest management in a healthy economy.

California Environmental Protection Agency (CalEPA):  http://www.calepa.ca.gov/
The mission of the California Environmental Protection Agency (Cal/EPA) is to improve environmental quality in order to protect public health, the welfare of our citizens, and California's natural resources. Cal/EPA will achieve its mission in an equitable, efficient, and cost-effective manner.

Cooperative State Research, Education, and Extension Service (CSREES): http://www.reeusda.gov/
CSREES has research and education information about many subjects, and staff specialists who can answer your questions or refer you to someone at state or county level who possesses the information you need.

VETERINARY RELATED WEBSITES

Food Animal Residue Avoidance Databank (FARAD): http://www.FARAD.org
FARAD is a computer-based decision support system designed to provide livestock producers, Extension specialists, and veterinarians with practical information on how to avoid drug, pesticide and environmental contaminant residue problems.

Food and Drug Administration's Center for Veterinary Medicine (FDA/CVM): http://www.fda.gov/cvm/