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Vinyl chloride

Forrest City Waterworks

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.

 

52

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND90ND
2011ND80ND
2012ND90ND
2013ND90ND
2014ND90ND
2015ND80ND

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 0.05 ppb

The 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.

ppb = parts per billion.

EPA Maximum Contaminant
Level (MCL) 2 ppb

The enforceable federal standard that defines the highest level of a contaminant allowed in drinking water.

ppb = parts per billion.

EPA Maximum Contaminant
Level Goal (MCLG)0 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Lab ID Result
2010-02-1010042000601ND
2010-02-1010042000701ND
2010-05-2510146004401ND
2010-05-2510146004601ND
2010-05-2510146004501ND
2010-07-2810210006209ND
2010-07-2810210006109ND
2010-11-1610321000809ND
2010-11-1610321000909ND
2011-03-1411076001001ND
2011-03-1411076000901ND
2011-05-2511146008601ND
2011-05-2511146008009ND
2011-06-1711168000301ND
2011-08-0311216001001ND
2011-11-2911335000701ND
2011-11-2911335000801ND
2012-01-2512026006001ND
2012-01-2512026006101ND
2012-06-1312166003001ND
2012-06-1312166003101ND
2012-06-1312166002901ND
2012-08-2712242003701ND
2012-08-2712242003801ND
2012-10-0212278013901ND
2012-10-0212278014001ND
2013-02-1213044000801ND
2013-02-1213044000901ND
2013-04-0113094007101ND
2013-04-0113094007201ND
2013-04-0113094007301ND
2013-08-2713241000309ND
2013-08-2713241000209ND
2013-11-0513310000809ND
2013-11-0513310000909ND
2014-02-0514038000701ND
2014-02-0514038000602ND
2014-04-2314114013809ND
2014-04-2314114014301ND
2014-04-2314114014002ND
2014-08-2714240001201ND
2014-08-2714240000702ND
2014-11-2414330003801ND
2014-11-2414330003701ND
2015-01-1215015008601ND
2015-01-1215015008501ND
2015-04-0815099007301ND
2015-04-0815099007201ND
2015-08-2415238000701ND
2015-08-2415238000602ND
2015-12-0115337004801ND
2015-12-0115337004901ND