These 10-essential environmental public health services identify the actions necessary to the protection, and improvement of environmental public health. They are adapted from the 10-essential public health services, and the core functions of public health. This image shows how the 10-essential environmental public health services align with the three core functions of public health, which are assessment, policy development, and assurance. PHIL 22746, 22747, and 22748, provide graphic variations on this same theme. Visit the link below, for more about these services.