Although the EPA tests for 83 contaminants, it is not a comprehensive testing of all threats to water quality. Of all the plastics, PVC plastic or vinyl can be considered the most problematic. Because PVC on its own is almost useless as a plastic, numerous additives are used to make a wide variety of products. Some of these additives are plasticizers to make it soft and pliable, heavy metals as stabilizers or to give it color, and fungicides to stop fungi from eating the other additives. Stainless steel is, perhaps, the most desirable drinking water pipe material.
Steel is used in parts of Europe and Japan.
Bottled water presents its own set of hazards. Endocrine-disrupting chemicals have been found to leach from plastic, causing a rampant proliferation of breast cancer cells. The bill would also entitle bottled water consumers to receive the same kinds of Right to Know information on bottled water sources and contaminant test results that are to be provided to tap water consumers. See below for more information. History has proven that the public cannot not solely rely on federal, state, county, and local authorities to protect water quality.