Some of the threats to civilians living in the towns and cities of Syria come from environmental pollution generated or exacerbated by the conflict. Rubble, wastes, pollution from damaged industry and munitions residues may all present immediate and long-term threats to civilians and their environment. This desktop analysis identifies four types of hazards - feasible scenarios in which the environmental impact of the conflict may have a direct and or long-term impact on the public health of the Syrian population.