In this study, the Environmental Management Systems (EMS) of four selected industries in Lagos State: Chi Limited, Emzor Pharmaceuticals, Jawa International Limited and Promasidor Nigeria Limited were assessed using parameters such as background information, environmental policy, policy objectives and targets, employee's responsibilities and roles, environmental management audit, document and communication, monitoring and recording, training, ISO 14001 Certification, and environmental performance.

In recent years the topic of environmental management has become very common. In sustainable development conditions, central and local governments much more often notice the need of acting in ways that diminish negative impact on environment. Environmental management may take place on many different levels - starting from global level, e.g. climate changes, through national and regional level (environmental policy) and ending on micro level. This publication shows many examples of environmental management. The diversity of presented aspects within environmental management and approaching the subject from the perspective of various countries contributes greatly to the development of environmental management field of research.