The sentence "reduction in pollution" is correct and usable in written English.
You can use it when you want to discuss the importance of reducing pollution or to describe a situation in which pollution has been reduced. For example, "The city implemented various policies and initiatives to achieve a reduction in pollution, and air quality has improved significantly over the past few years."
(Within an overall target for an industry, the efficient factory or utility can sell its reduction in pollution to allow a less efficient buyer to continue polluting).
"For those of us who have been monitoring air pollutants for about 10 years, we see a clear reduction in pollution," Zhu Tong, a professor and air pollution scientist at Peking University's College of Environmental Sciences and Engineering, said in an interview.
It worked, delivering a sharp reduction in pollution at lower-than-predicted cost.
The reduction in pollution is impressive, officials here say, because the Denver area has become one of the fastest growing regions in the country over the last decade.
Cutting those areas of pollution are the main indicators in China's nationwide plan for a 10percentt reduction in pollution by 2010.
Two weeks later a joint report by the UN Environment Program (UNEP) and the World Health Organization (WHO) warned of health problems caused by urban air pollution and urged a reduction in pollution levels.
The burden of these levies would be lessened by the resulting reductions in pollution and congestion.
In Houston, a new generation of business leaders, alarmed by the city's smog problem, is calling for solutions that include sharp reductions in pollution from nearby refineries.
In the last three years, Mr. Pataki has moved toward requiring reductions in pollution from power plants, but he has resisted calls to include limits on carbon dioxide.
In addition to significant reductions in pollution, that agreement is expected to save 1.6 million barrels of oil a day, roughly the amount produced in the Gulf of Mexico.
Dramatic reductions in pollution, the incredible safety of our air transportation system, improvements in safety of the highways are all because of the federal government.
