NIEH carries out business activities in the following areas:

• Outdoor and indoor air quality (immission) studies;
• Testing and qualification of drinking, mineral and medicinal waters as well as bathing waters;
• Testing and qualification of small water purifiers and ultra-pure water production systems used in health care (dialysis stations);
• Investigation of materials, preparations and technologies used in the field of drinking water supply;
• Investigation of soil, waste, soil amelioration and compost materials;
• Assessment of environmental and human health risks at contaminated areas;
• Data processing and data banking services;
• Technological and scientific research;
• Technical planning and expertise in support of economic activities;
• Field and laboratory investigations and measurements;
• Study of standard conformity;
• Organisation of scientific-technical events, presentations and exhibitions;
• Teaching and training activities;