Yes, the Watchtower Society pollutes and is on the EPA report ... they are not as bad most ... but they still pollute the environment with their printing equipment, boilers for heating, and deisel engines for power, etc. As they themselves said, God will bring to ruin those ruining the earth.
Click here: http://epa.gov/ttn/naaqs/ozone/areas/plant/stnypln.htm (Watchtower is near bottom)
Click on the Watchtower name and you will get an even more detailed report.