NEHA- http://neha.org/ NEHA currently serves 5,000 members to advance the environmental health and protection professional for the purpose of providing a healthful environment for all. Professionals who earn a Registered Environmental Health Specialist/Registered Sanitarian credential from NEHA are recognized as having achieved an established standard of excellence. These environmental health professionals master a body of knowledge (which is verified by examination), and acquire sufficient experience to satisfactorily perform work responsibilities in the environmental health field. - See more at: http://neha.org/about-neha#sthash.WqzzWcCh.dpuf
APHA - https://apha.org/ APHA champions the health of all people and all communities. We are the only organization that influences federal policy, has a 145-year perspective and brings together members from all fields of public health.
American Association of Sanitarians- http://www.sanitarians.org/ The American Academy of Sanitarians (AAS) is an organization that elevates the standards, improves the practice, advances the professional proficiency and promotes the highest levels of ethical conduct among professional sanitarians in every field of environmental health.
Association of ENVIRONMENTAL health academic programs