CONTROL FRAMEWORK

Legislation development is a necessary step to protect Hong Kong's air quality. The Air Pollution Control Ordinance requires industry to reduce excessive air pollutants. In 1989, the entire territory was declared as air control zones with a set of Air Quality Objectives (AQOs) for seven pollutants: sulphur dioxide, total suspended particulates (TSP), respirable suspended particulates (RSP), nitrogen dioxide, carbon monoxide, photochemical oxidants (ozone) and lead. The AQOs set target concentrations for these pollutants at levels which are consistent with international health standards.