The use of the precautionary principle to the area of environmental management and sustainability, largely
in response to the necessity of every each individual state to protect their rights and interests in order to
safeguard the Mother Nature. Therefore, this study examines the used of the precautionary principle in the
Siak Regency of Indonesia focusing on the planning laws in relation to the environmental management and
sustainability from the legal perspectives; identify actions, which deal with the protection to the environment
as well as a tool for the achievement in sustainable development