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A Citizen's Guide to Radon. The Guide to Protecting Yourself and Your Family From Radon U.S.

A Citizen's Guide to Radon

EPA/OAR/IED (6609J) EPA 402-K-12-002, May 2012 [Please note, the Spanish version of the Citizen's Guide has not been updated. Plumbing - What is Polybutylene? The piping systems were used for underground water mains and as interior water distribution piping.

Plumbing - What is Polybutylene?

Industry experts believe it was installed in at least 6 million homes, and some experts indicate it may have been used in as many as 10 million homes. Most probably, the piping was installed in about one in every four or five homes built during the years in which the pipe was manufactured. How to Tell If You Have PolyExterior - Polybutylene underground water mains are usually blue, but may be gray or black (do not confuse black poly with polyethelene pipe).