Originally established in 1947 as the Louisiana Association of Sanitarians, the organization served only public health sanitarians. Due to expanding concerns in the field of environmental control, LEHA supports and promotes:

• Continuing professional development through annual conferences, seminars, and other appropriate educational forums;
• Participation in public affairs which render enhanced public health and environmental protection in the community;
• General welfare of the professional sanitarian and environmental professional in the state of Louisiana and the nation.

Both the national and state affiliate associations hope to foster more cooperation and understanding between and among environmental health professionals, to contribute to the resolution of worldwide environmental health issues, and to advance the cause, image and professional standing of the environmental health profession.