US Environmental Protection Agency
The EPA responds to waterborne disease outbreaks, from drinking water, at the state or local level, when the CDC makes the determination that it may be a multiple state outbreak. The EPA also becomes involved in problems of pesticides and other toxic substances.
Environmental Health Specialist Network
The Environmental Health Specialist Network (EHS-Net) is a collection of environmental health specialists who improve environmental health by working with epidemiologists and laboratories to identify and prevent the environmental factors that contribute to foodborne and waterborne disease. The environmental assessment of a foodborne disease investigation allows people to better understand the contributing factors such as workers’ health, poor hand washing practices, improper temperatures, presence of insects or rodents, presence of hazardous chemicals, complexity of food handling procedures, numbers of meals served, numbers of certified, well-trained food service supervisors, cleaning policies, sick leave policies, hand sink with hot and cold running water availability and usage, etc.