The American Industrial Hygiene Association (AIHA®) is one of the largest international associations serving the needs of occupational and environmental health professionals.

The National Safety Council saves lives by preventing injuries and deaths at work, in homes and communities, and on the roads, through leadership, research, education and advocacy.

ASTM International is one of the largest voluntary standards development organizations in the world-a trusted source for technical standards for materials, products, systems, and services.

The National Environmental Health Association (NEHA) had its origins in the state of California where it was incorporated in 1937.

Founded in 1911, ASSE is the oldest and largest professional safety organization. Its more than 32,000 members manage, supervise and consult on safety, health, and environmental issues in industry, insurance, government and education.

The mission of the international nonprofit NFPA, established in 1896, is to reduce the worldwide burden of fire and other hazards on the quality of life by providing and advocating consensus codes and standards, research, training, and education.

The American Public Health Association is the oldest and most diverse organization of public health professionals in the world and has been working to improve public health since 1872.