The plastic bathtubs of many homes, including many in California, are now coated with a chemical compound called polyvinyl chloride.
Some homeowners are taking advantage of the new law to install new tub doors.
“If it doesn’t look like the old tub, it probably doesn’t work,” said Jessica Safford of Los Angeles.
“So I think people need to make sure that they’re actually replacing the tub doors,” she said.
One of the first cases of plastic tub doors being installed in the Bay Area was at a home in San Francisco’s Mission District.
“We installed one of these doors to the bathroom and we’ve been using it for about three months now,” homeowner Jennifer McLeod told KPIX 5.
“They’re just like a big box of duct tape.”
The doors have since been replaced.
California law requires that the manufacturer of the tub must provide at least one-third of the materials used in the tub to the buyer, and in most cases the manufacturer must provide that same amount of the other materials to the consumer.
The law also says that the consumer must be notified of the potential safety hazard when the tub is being installed.
According to California state regulators, Polyvinyl Chloride is a toxic chemical.
It has a shelf life of three years.
The California Environmental Protection Agency says polyvinylene chloride, which has been used as a paint additive and is also used to make vinyl siding, is “likely carcinogenic and has been shown to cause birth defects, developmental disorders, cancer, reproductive harm and reproductive toxicity.”
It is listed on the U.S. Environmental Protection Trade Advisory Board’s list of hazardous chemicals and substances that are likely to cause cancer and reproductive harm.
The agency says that polyvinylecgonitrile is a plastic solvent that is also known as polyvinYL chloride, and that polyester polymers are not listed on this listing.
The California Department of Toxic Substances Control says it has not been able to find any data showing polyvinene chloride as a carcinogen.
Polyvinyl chlorides have been found to cause reproductive harm in laboratory animals.
In a study published in the journal Toxicology Letters in 2013, researchers at the University of Utah studied the effects of polyvininyl chlorides on the reproductive organs of mice.
“Polyvinylene chlorides and polyester pigments are frequently used in cosmetic formulations, including paints and dyes, and are used as polymers in plastics, rubber and composites,” the study said.