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EWG's Tap Water Database — 2019 UPDATE

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Vinyl chloride

Moore County Public Util. - Pinehurst

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.

 

43

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND180ND
2014ND160ND
2015ND20ND
2016ND20ND
2017ND20ND

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
2012-01-2437729_12-01991ND
2012-08-3037729_12-24132ND
2012-11-1937729_12-32868ND
2013-03-1237729_13-07115ND
2013-03-1337729_13-07110ND
2013-03-1337729_13-07111ND
2013-03-1337729_13-07112ND
2013-03-1337729_13-07113ND
2013-03-1337729_13-07114ND
2013-03-1337729_13-07109ND
2013-03-1337729_13-07108ND
2013-03-1337729_13-07107ND
2013-03-1337729_13-07106ND
2013-03-1337729_13-07105ND
2013-03-1337729_13-07104ND
2013-03-1337729_13-07103ND
2013-03-1337729_13-07102ND
2013-03-1937729_13-07722ND
2013-05-1437729_13-13228ND
2013-06-3037729_13-18554ND
2013-09-1737729_13-27691ND
2014-08-1837729_14-25402ND
2014-08-1837729_14-25400ND
2014-08-1837729_14-25395ND
2014-08-1837729_14-25393ND
2014-08-1837729_14-25388ND
2014-08-1837729_14-25386ND
2014-08-1837729_14-25390ND
2014-08-1837729_14-25389ND
2014-08-1937729_14-25401ND
2014-08-1937729_14-25391ND
2014-08-1937729_14-25399ND
2014-08-1937729_14-25398ND
2014-08-1937729_14-25397ND
2014-08-1937729_14-25396ND
2014-08-1937729_14-25394ND
2014-08-1937729_14-25392ND
2015-10-14ND
2015-10-14ND
2016-02-1737729_16-05058ND
2016-02-1737729_16-05059ND
2017-06-0737729_17-18950ND
2017-06-0737729_17-18951ND