EMI shielded defence shelter is a greater level of defence against the impacts of nuclear, chemical, and biological warfare agents. It is made of highly durable, semi-rigid materials that offer excellent defence against the impacts of heat, radiation. The shelter has a water filtration system that provides clean drinking water and an air filtration system that filters pollutants from the air. Additionally, EMI shielded defence shelter has a ventilation system that lets people within breath fresh air. It contains Radio Frequency Interference (RFI) signals produced by equipment within and shields delicate electronic equipment from the effects of EMI.