Ultraliner PVC Alloy Pipeliner IS environmentally safe!
October 11, 2012
With Ultraliner PVC Alloy Pipeliner there are no noxious odors, no hazardous chemicals to handle and no hazardous materials released into the environment.

Concerned about the environmental impact of styrene on your community? Read on...

OSHAs report on the hazards of styrene to our environment here.
EPA's Technology Transfer Network Air Toxics Website here.

Other sources:
Wikipedia
National Toxicology Program, Department of Health and Human Services, NIH