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EWG's Tap Water Database — 2019 UPDATE

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Vinyl chloride

City of Corpus Christi

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.

 

70

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND130ND
2013ND490ND
2014ND10ND
2015ND10ND
2016ND10ND
2017ND50ND

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
2012-07-101207411001ND
2012-12-21AC07347ND
2012-12-21AC07342ND
2012-12-21AC07340ND
2012-12-21AC07352ND
2012-12-21AC07349ND
2012-12-21AC07353ND
2012-12-21AC07350ND
2012-12-21AC07354ND
2012-12-21AC07355ND
2012-12-21AC07341ND
2012-12-21AC07348ND
2012-12-21AC07351ND
2013-02-14AC10559ND
2013-02-14AC10568ND
2013-02-14AC10558ND
2013-02-14AC10561ND
2013-02-14AC10565ND
2013-02-14AC10567ND
2013-02-14AC10566ND
2013-02-14AC10563ND
2013-02-14AC10560ND
2013-02-14AC10562ND
2013-02-14AC10564ND
2013-02-14AC10557ND
2013-05-29AC20861ND
2013-05-29AC20854ND
2013-05-29AC20849ND
2013-05-29AC20855ND
2013-05-29AC20850ND
2013-05-29AC20858ND
2013-05-29AC20851ND
2013-05-29AC20852ND
2013-05-29AC20859ND
2013-05-29AC20856ND
2013-05-29AC20860ND
2013-05-29AC20853ND
2013-08-09AC27466ND
2013-09-12AC30013ND
2013-09-12AC30018ND
2013-09-12AC30016ND
2013-09-12AC30020ND
2013-09-12AC30021ND
2013-09-12AC30014ND
2013-09-12AC30012ND
2013-09-12AC30023ND
2013-09-12AC30022ND
2013-09-12AC30017ND
2013-09-12AC30015ND
2013-09-12AC30032ND
2013-12-20AC38160ND
2013-12-20AC38161ND
2013-12-20AC38166ND
2013-12-20AC38162ND
2013-12-20AC38156ND
2013-12-20AC38155ND
2013-12-20AC38165ND
2013-12-20AC38157ND
2013-12-20AC38158ND
2013-12-20AC38163ND
2013-12-20AC38159ND
2013-12-20AC38164ND
2014-08-07AC62550ND
2015-08-13AD04130ND
2016-09-14AD49468ND
2017-03-21AD76053ND
2017-05-16AD84466ND
2017-07-28AD91393ND
2017-07-28AD91401ND
2017-11-14AE04787ND