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EWG's Tap Water Database — 2019 UPDATE

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Vinyl chloride

City of Chubbuck

Vinyl chloride is a known human carcinogen used for production of polyvinyl chloride (PVC) plastics. Discharges from plastics manufacturing can contaminate drinking water with vinyl chloride. Read More.

Exposure to vinyl chloride increases the risk of cancer and can damage the liver and nervous system. The California public health goal of 0.05 parts per billion, set to protect against cancer, is 40 times lower than the amount allowed by the federal government, which is a Maximum Contaminant Level of 2 parts per billion.

Plastic pipes made of polyvinyl chloride (PVC) and chlorinated PVC (CPVC) are widely used for drinking water distribution lines and internal plumbing, raising concern about vinyl chloride contamination of drinking water. A study published in 2011 by Ryan Walter of Cornell University School of Civil and Environmental Engineering suggested that small amounts of vinyl chloride can leach from PVC pipes. Vinyl chloride can also form in the pipes as a result of water disinfection with chlorine.

In an assessment completed in 2000, California Office of Environmental Health Hazard Assessment stated that drinking water is not a significant source of exposure to vinyl chloride for the general population.

Click here to read more about carcinogenic VOCs.

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND40ND
2014ND30ND
2015ND30ND
2016ND50ND
2017ND100ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.05 ppb

The EWG Health Guideline of 0.05 ppb for vinyl chloride was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL) 2 ppb

The legal limit for vinyl chloride, established in 1987, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer due to vinyl chloride exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2012-10-03V1248031ND
2012-10-03V1248051ND
2012-10-03V1248061ND
2012-10-03V1248041ND
2013-09-17VI30914204ND
2013-09-17VI30914203ND
2013-09-17VI30914202ND
2013-09-17VI30914201ND
2014-09-04VI40904901ND
2014-09-04VI40905201ND
2014-09-04VI40905101ND
2015-08-25VI50816401ND
2015-08-25VI50816402ND
2015-08-25VI50816403ND
2016-07-27VI60728003ND
2016-07-27VI60728002ND
2016-07-27VI60728001ND
2016-11-29VI61118401ND
2016-11-30VI61120201ND
2017-02-14VI70209102ND
2017-03-09VI70308001ND
2017-06-01VI70600802ND
2017-06-01VI70600801ND
2017-08-16VI70816003ND
2017-08-16VI70816004ND
2017-08-16VI70816005ND
2017-08-22VI70821201ND
2017-11-07VI71105701ND
2017-11-07VI71105101ND