| air pollution | 50.03 | Bad air pollution again? | ||
| water pollution | 9.02 | Water pollution? | ||
| ozone pollution | 2.63 | Ditto for ozone pollution. | ||
| river pollution | 1.78 | Thousands of fish died from river pollution. | ||
| oil pollution | 1.18 | No oil pollution was reported. | ||
| dioxin pollution | 1.12 | Japan facing major problem of dioxin pollution. | ||
| mercury pollution | 1.12 | There are many sources of mercury pollution, some natural. | ||
| groundwater pollution | 0.79 | But enforcement action has been taken only once before against a hog farm over groundwater pollution. | ||
| sewage pollution | 0.79 | According to the Society, the major health hazard is still sewage pollution. | ||
| particle pollution | 0.59 | The U.S. Environmental Protection Agency is considering revisions of its rules for particle pollution. | ||
| vehicle pollution | 0.53 | The city authorities are currently carrying out a drive against growing vehicle pollution. | ||
| dust pollution | 0.46 | Residents are normally bothered by the dust pollution from the mining. | ||
| ocean pollution | 0.46 | International conference focusing on the problems of ocean pollution. | ||
| auto pollution | 0.39 | Fly ash from incinerators and some auto pollution falls into that range. | ||
| cross-border pollution | 0.39 | But Tung, a shipping magnate appointed by Beijing, has said little about cross-border pollution. | ||
| exhaust pollution | 0.39 | The metals are used in electronics and catalytic converters, which reduce automobile exhaust pollution. | ||
| sea pollution | 0.39 | It also calls for joint efforts to combat sea pollution and to exchange naval information. | ||
| traffic pollution | 0.39 | Traffic pollution is also a killer. | ||
| tailpipe pollution | 0.33 | The new test was designed to more accurately measure tailpipe pollution to bring New Jersey in line with federal clean air rules. | ||
| car pollution | 0.26 | The new project will lessen the effects of car pollution. |