Adelaide suffers from air, light, water and noise pollution. 70% of the air pollution is from transport, the key emissions that impact air quality are carbon monoxide, oxides of nitrogen. South Australia wastes over $5 million dollars per year on electricity, which produces more than 70,000 tons of carbon dioxide emissions. By reducing light pollution it would be like taking 10,000 cars off the road. Naturally occurring chemical, man-made sources and litter can easily pollute water.