Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Vinyl chloride

City of Mesa

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.

 

86

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND370ND
2013ND80ND
2014ND80ND
2015ND210ND
2016ND60ND
2017ND60ND

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
2012-01-12201201120258VND
2012-04-09201204090008VND
2012-04-10201204100084VND
2012-04-16201204160112VND
2012-04-17201204170459VND
2012-04-17201204170458VND
2012-05-07201205070059VND
2012-05-08201205080126VND
2012-08-0612070782VND
2012-08-0612070773VND
2012-08-0612070776VND
2012-08-0812070787VND
2012-08-0812070784VND
2012-08-0812070774VND
2012-08-1312070735VND
2012-08-1312070733VND
2012-08-1312070714VND
2012-08-14120070736VND
2012-08-1412070715VND
2012-08-1412070736VND
2012-08-1412070732ND
2012-08-1512070734VND
2012-08-1512070716VND
2012-08-2212070786VND
2012-08-2212070783VND
2012-08-2212070778VND
2012-08-2712070779VND
2012-08-2712070777VND
2012-08-2712070772VND
2012-08-2812070781VND
2012-08-2812070785VND
2012-08-3012080753VND
2012-09-2412070780VND
2012-11-1912110554ND
2012-11-2012110619VND
2012-11-2012110575ND
2012-11-2012110570ND
2013-03-0513030009ND
2013-03-0513030008ND
2013-05-0913050079ND
2013-05-0913050078ND
2013-05-0913050077ND
2013-07-1613070278VND
2013-10-15201310150513VND
2013-11-13201311140691VND
2014-02-1214020403ND
2014-04-1414040462VND
2014-04-2114040565VND
2014-04-2214040549VND
2014-04-2214040548VND
2014-08-0414080002ND
2014-10-0814100299ND
2014-12-0214120040ND
2015-02-0415020072ND
2015-02-0915020157ND
2015-02-1115020441ND
2015-04-0715040272VND
2015-04-0715040249VND
2015-04-1415040401VND
2015-04-1415040400VND
2015-04-2115040607VND
2015-04-2115040606VND
2015-04-2715040701VND
2015-04-2915040771VND
2015-07-0715070120ND
2015-07-0715070119ND
2015-07-1315070247ND
2015-07-1415070252ND
2015-07-2115070448VND
2015-10-0615100055ND
2015-10-1215100147ND
2015-10-1415100211ND
2015-10-1415100210ND
2015-10-2115100530ND
2016-05-1116050438AND
2016-06-0816060165ND
2016-07-1416070145VND
2016-08-1116080428ND
2016-08-1116080427ND
2016-11-2216110466ND
2017-04-1117040387VOCND
2017-05-2517050671VOCND
2017-07-1017070232VOCND
2017-07-1117070293VOCND
2017-08-2117080520VOCND
2017-10-1217100475ND