Indeed, it is fair to say that the chemical industry is seen as one of the worst polluters.

Uncontrolled, it would be one of the worst polluters in North America.

The world's worst polluters (see China) are not included, making the entire agreement completely ineffectual.

Even so, regulators still consider it one of the state's worst polluters.

The plant had long been regarded as one of Quebec's worst polluters.

The city is, without doubt, the worst polluter in the Catskills.

As it is, our hard-earned tax dollars go to the biggest farms - some of the country's worst polluters.

It will mean bankruptcy for inefficient factories, often the worst polluters.

The authorities must therefore police themselves, a problem the more poignant since their own sewage works are often the worst polluters.

"This guy has had some really questionable clients, like one of the 15 worst toxic polluters in the country," the ad continues.