Environmental health is the branch of public health that is concerned with all aspects of the natural and built environment that may affect human health. Humans interact with the environment constantly. These interactions affect quality of life, years of healthy life lived, and health disparities. Our environmental health services consist of preventing or controlling disease, injury, and disability related to the interactions between people and their environment. Blue Gate Initiative engages in consultation and provides educational services, conducts inspections and surveillance activities in the areas of food safety, drinking water quality, institutional/care facilities, personal services, sewage disposal, special events, recreational facilities, communicable disease control and other public health related matters. We also investigate human-work relationship and work-environment relationship by carrying out Environmental Impact Assessment (EIA) and Health Impact Assessment (HIA) at various levels of project implementation. 
This Department is also concerned with the description and monitoring of environmental changes, with predicting future changes and with attempts to maximise human benefit and to minimise environmental degradation due to human activities. We also study how toxic chemicals affect organisms and the environment. Blue Gate Initiative collect and test samples to determine the presence and amount of contaminants, and study how they got there. We provide test tissue samples, water, air, or food. We also conduct laboratory experiments to determine the effects of a toxin at various concentrations.
It is important to note that we need safe, healthy and supportive environments for good health. The environment in which we live is a major determinant of our health and wellbeing. We depend on the environment for energy and the materials needed to sustain life, such as:
- clean air
- safe drinking water
- nutritious food
- safe places to live. Many aspects of our environment – both built and natural environment – can impact on our health. It’s important that we interpret health issues in the wider context of our environment and where we live