Know Your Environment. Protect Your Health.

Vinyl chloride

Comanche Harbor & Port Ocall

NOTE: Comanche Harbor & Port Ocall purchases water from Acton MUD which is required to test for vinyl chloride. Sample information shown below was taken by Acton MUD.

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
2018ND20ND
2019ND20ND
2020ND20ND
2021ND20ND
2022ND20ND
2023ND20ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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

NOTE: Comanche Harbor & Port Ocall purchases water from Acton MUD which is required to test for vinyl chloride. Sample information shown below was taken by Acton MUD.

Date Lab ID Result
2018-03-28Q1812936019ND
2018-03-28Q1812936001ND
2018-03-28Q1812936021ND
2018-03-28Q1812936018ND
2018-03-28Q1812936016ND
2018-03-28Q1812936013ND
2018-03-28Q1812936012ND
2018-03-28Q1812936010ND
2018-03-28Q1812936008ND
2018-03-28Q1812936005ND
2018-03-28Q1812936004ND
2018-05-01Q1817372001ND
2018-05-01Q1817372003ND
2018-05-01Q1817372005ND
2018-05-01Q1817372007ND
2018-05-01Q1817372009ND
2018-12-11Q1850865005ND
2019-01-10Q1901506008ND
2019-01-10Q1901506003ND
2019-03-26Q1912275021ND
2019-03-26Q1912275040ND
2019-03-26Q1912275038ND
2019-03-26Q1912275036ND
2019-03-26Q1912275033ND
2019-03-26Q1912275032ND
2019-03-26Q1912275029ND
2019-03-26Q1912275027ND
2019-03-26Q1912275026ND
2019-03-26Q1912275023ND
2019-04-18Q1915698002ND
2019-04-18Q1915698004ND
2020-03-04Q2008205031ND
2020-03-04Q2008205029ND
2020-03-04Q2008205027ND
2020-03-04Q2008205025ND
2020-03-04Q2008205023ND
2020-03-04Q2008205021ND
2020-03-04Q2008205017ND
2020-03-04Q2008205019ND
2020-03-25Q2012703023ND
2020-03-25Q2012703021ND
2020-03-25Q2012703019ND
2020-03-25Q2012703017ND
2020-03-25Q2012703015ND
2020-07-29Q2029640005ND
2020-07-29Q2029640007ND
2020-09-17Q2037199008ND
2021-02-09Q2103864006ND
2021-02-09Q2103864020ND
2021-02-09Q2103864018ND
2021-02-09Q2103864016ND
2021-02-09Q2103864014ND
2021-02-09Q2103864012ND
2021-02-09Q2103864010ND
2021-02-09Q2103864008ND
2021-04-01Q2108342036ND
2021-04-01Q2108342034ND
2021-04-01Q2108342032ND
2021-04-01Q2108342028ND
2021-04-01Q2108342026ND
2021-04-01Q2108342024ND
2021-04-01Q2108342030ND
2021-07-22Q2119289002ND
2022-01-27Q2202897014ND
2022-01-27Q2202897016ND
2022-01-27Q2202897018ND
2022-04-07Q2210873011ND
2022-04-07Q2210873013ND
2022-04-07Q2210873015ND
2022-04-07Q2210873017ND
2022-10-06Q2230209005ND
2022-10-06Q2230209007ND
2022-10-06Q2230209003ND
2022-10-06Q2230209001ND
2023-07-26Q2329862002ND
2023-10-18Q2344522014ND
2023-10-18Q2344522016ND
2023-10-18Q2344522018ND
2023-10-18Q2344522020ND
2023-10-18Q2344522022ND
2023-10-18Q2344522024ND
2023-11-14Q2348718037ND
2023-11-14Q2348718039ND
2023-11-14Q2348718041ND
2023-11-14Q2348718043ND
2023-11-14Q2348718045ND